diff --git a/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml b/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml
index b70c1f362cab..c13c0747c549 100644
--- a/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml b/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml
index e7ab921828d4..973b8dc8804b 100644
--- a/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml b/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml
index de28e2bfe205..229a23246d05 100644
--- a/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-opentracing/pom.xml b/apm-application-toolkit/apm-toolkit-opentracing/pom.xml
index e9143dd19b82..8b936ef22948 100644
--- a/apm-application-toolkit/apm-toolkit-opentracing/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-opentracing/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-trace/pom.xml b/apm-application-toolkit/apm-toolkit-trace/pom.xml
index 390fa6306d49..987a4c63bd8a 100644
--- a/apm-application-toolkit/apm-toolkit-trace/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-trace/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/pom.xml b/apm-application-toolkit/pom.xml
index c3ce08a4f26d..23d69aaa75dc 100644
--- a/apm-application-toolkit/pom.xml
+++ b/apm-application-toolkit/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>apm-application-toolkit</artifactId>
diff --git a/apm-checkstyle/pom.xml b/apm-checkstyle/pom.xml
index 948907d287c8..24812133f438 100644
--- a/apm-checkstyle/pom.xml
+++ b/apm-checkstyle/pom.xml
@@ -27,7 +27,7 @@
 
     <groupId>org.apache.skywalking</groupId>
     <artifactId>apm-checkstyle</artifactId>
-    <version>6.0.0-alpha-SNAPSHOT</version>
+    <version>6.0.0-alpha</version>
     <description>Module to hold Checkstyle for SkyWalking.</description>
 
     <properties>
@@ -64,4 +64,8 @@
             </plugin>
         </plugins>
     </build>
+
+  <scm>
+    <tag>v6.0.0-alpha</tag>
+  </scm>
 </project>
diff --git a/apm-commons/apm-datacarrier/pom.xml b/apm-commons/apm-datacarrier/pom.xml
index 93ad8905d89b..40190e332fde 100644
--- a/apm-commons/apm-datacarrier/pom.xml
+++ b/apm-commons/apm-datacarrier/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-commons</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-commons/apm-util/pom.xml b/apm-commons/apm-util/pom.xml
index 2603f92b45fc..3c74289a5be5 100644
--- a/apm-commons/apm-util/pom.xml
+++ b/apm-commons/apm-util/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-commons</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-commons/pom.xml b/apm-commons/pom.xml
index edf1c3b9cea6..6b46de8eccb3 100644
--- a/apm-commons/pom.xml
+++ b/apm-commons/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-dist/pom.xml b/apm-dist/pom.xml
index bbbfb80144b5..3143e8790d8d 100644
--- a/apm-dist/pom.xml
+++ b/apm-dist/pom.xml
@@ -17,12 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -82,12 +81,8 @@
                         </goals>
                         <configuration>
                             <tasks>
-                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.tar.gz"
-                                      tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.tar.gz"
-                                      overwrite="true"/>
-                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.zip"
-                                      tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.zip"
-                                      overwrite="true"/>
+                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.tar.gz" tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.tar.gz" overwrite="true" />
+                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.zip" tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.zip" overwrite="true" />
                             </tasks>
                         </configuration>
                     </execution>
diff --git a/apm-protocol/apm-network/pom.xml b/apm-protocol/apm-network/pom.xml
index 935d638ddcb5..0a858e877165 100644
--- a/apm-protocol/apm-network/pom.xml
+++ b/apm-protocol/apm-network/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-protocol</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-protocol/pom.xml b/apm-protocol/pom.xml
index 0b59e5d95557..a676aea42df8 100644
--- a/apm-protocol/pom.xml
+++ b/apm-protocol/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-agent-core/pom.xml b/apm-sniffer/apm-agent-core/pom.xml
index cc95d79bff47..58952fd17180 100644
--- a/apm-sniffer/apm-agent-core/pom.xml
+++ b/apm-sniffer/apm-agent-core/pom.xml
@@ -16,14 +16,13 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-agent-core</artifactId>
@@ -214,8 +213,7 @@
                                 </filter>
                             </filters>
                             <transformers>
-                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
                             </transformers>
                         </configuration>
                     </execution>
@@ -231,7 +229,7 @@
                         </goals>
                         <configuration>
                             <tasks>
-                                <delete dir="${project.basedir}/../../packages"/>
+                                <delete dir="${project.basedir}/../../packages" />
                             </tasks>
                         </configuration>
                     </execution>
@@ -240,22 +238,14 @@
                         <phase>package</phase>
                         <configuration>
                             <target>
-                                <echo message="unjar"/>
-                                <unzip src="${project.build.directory}/${artifactId}-${version}.jar"
-                                       dest="${project.build.directory}/unpacked/"/>
-                                <echo message="rename service providers in META-INF/services"/>
-                                <move
-                                    file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_osx_x86_64.jnilib"
-                                    tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_osx_x86_64.jnilib"/>
-                                <move
-                                    file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_linux_x86_64.so"
-                                    tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_linux_x86_64.so"/>
-                                <move
-                                    file="${project.build.directory}/unpacked/META-INF/native/netty_tcnative_windows_x86_64.dll"
-                                    tofile="${project.build.directory}/unpacked/META-INF/native/org_apache_skywalking_apm_dependencies_netty_tcnative_windows_x86_64.dll"/>
-                                <echo message="jar back"/>
-                                <jar destfile="${project.build.directory}/${artifactId}-${version}.jar"
-                                     basedir="${project.build.directory}/unpacked"/>
+                                <echo message="unjar" />
+                                <unzip src="${project.build.directory}/${artifactId}-${version}.jar" dest="${project.build.directory}/unpacked/" />
+                                <echo message="rename service providers in META-INF/services" />
+                                <move file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_osx_x86_64.jnilib" tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_osx_x86_64.jnilib" />
+                                <move file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_linux_x86_64.so" tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_linux_x86_64.so" />
+                                <move file="${project.build.directory}/unpacked/META-INF/native/netty_tcnative_windows_x86_64.dll" tofile="${project.build.directory}/unpacked/META-INF/native/org_apache_skywalking_apm_dependencies_netty_tcnative_windows_x86_64.dll" />
+                                <echo message="jar back" />
+                                <jar destfile="${project.build.directory}/${artifactId}-${version}.jar" basedir="${project.build.directory}/unpacked" />
                             </target>
                         </configuration>
                         <goals>
diff --git a/apm-sniffer/apm-agent/pom.xml b/apm-sniffer/apm-agent/pom.xml
index dd63db85d7b1..f2859e6de2fd 100644
--- a/apm-sniffer/apm-agent/pom.xml
+++ b/apm-sniffer/apm-agent/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-agent</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml
index 52706f5e040a..169c93df6b47 100644
--- a/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml
index c3aa8fc0c1d2..cf209e1d0d45 100644
--- a/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml
index 7a2f96e47ece..6cf94fbfa9e9 100644
--- a/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml
index 95cedd091fe9..f1305946f2d5 100644
--- a/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml
@@ -16,13 +16,11 @@
   ~ limitations under the License.
   ~
   -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml
index b7f401dde26f..56a185dce233 100644
--- a/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml
index 6efc106e1093..273df498de5f 100644
--- a/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-grpc-1.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml
index 9aa4dfa865d2..1369d9286d49 100755
--- a/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml
index 4657f8dd8427..6524af489334 100644
--- a/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-httpClient-4.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml
index 6e006cdb1a82..fcab9ac224f8 100644
--- a/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-httpasyncclient-4.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml
index d4967d72449c..1d1b7c2c6660 100644
--- a/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml b/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml
index 67266d617389..1e9c71551c4b 100755
--- a/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml
index d2c6e80a4760..69e64f782210 100644
--- a/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-jedis-2.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml
index 71c0a02acc32..2802c1040b90 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>jetty-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml
index 36870b4ee0dd..0eda33700789 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>jetty-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml
index 5a1d01155593..5601d92cc13a 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>jetty-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml
index cbdf65988b79..78b313eeb793 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>jetty-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml
index bcb80c7a4a9b..15bc114e8555 100644
--- a/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml
index bf508fd582e9..aa8fd00ef408 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml
index 8c48f748d422..a5757ebd4640 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-mongodb-3.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml
index c4c2e7daab08..6bd1edac22fc 100644
--- a/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml
index 309afd9a45d5..abba6851dc95 100755
--- a/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml
index 1c2d5d55f95d..c12f44453150 100644
--- a/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>nutz-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml
index 2cd2e1cd773a..be62e27870ea 100644
--- a/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>nutz-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml
index 04c39f7d5a0c..8fd56dffe872 100644
--- a/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>nutz-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml
index f426bcec9436..4996b59ffbc4 100644
--- a/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/pom.xml
index 2cd9013a7063..9a9276071efc 100644
--- a/apm-sniffer/apm-sdk-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-sdk-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml
index 1b8dff661887..a143fd7cfcad 100755
--- a/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml
index e5492ddda910..e05197668e0b 100644
--- a/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml
index 8d82324521d7..135e90e1bbaa 100644
--- a/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml
index 93e2a2936ff2..e17e86afb675 100644
--- a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml
index d35f251142ee..2be5de45990a 100644
--- a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>servicecomb-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml
index 7c4322ab3b06..736753e0d770 100644
--- a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>servicecomb-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml
index f41ccda35325..b87770812fd5 100644
--- a/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml
index 2222975b8981..1664b16373ff 100644
--- a/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml
index 2d836b315e8b..cccd8857e7da 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml
index 7947bd6362b1..f527d0833789 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml
index 766ef03e2015..5cd48c0ebcc6 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml
index ba7ac3360cb8..b91165ce62a9 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml
index 143b425ff4cc..8f332efb53e8 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml
index c114fcedea0e..dda99e6a9ecb 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>spring-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml
index 8c3218a3f512..88bdbb4d5522 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml
index 912f3e1d0b54..a03c6b854bd0 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>spring-cloud</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>netflix-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml
index 71e65327e30d..5d752e544d64 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>netflix-plugins</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-spring-cloud-feign-1.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml
index 78ddb96f1c44..dce5b03b9623 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>spring-plugins</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>spring-cloud</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml
index 1275fe7a66fd..9e51a80d6bae 100644
--- a/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-spymemcached-2.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml
index 448cb90c2656..c7b3ea1efb0c 100644
--- a/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml
index 1f696db1e8e4..a92436b9c5e1 100644
--- a/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml
index 85b33a70d6db..0f774728443c 100644
--- a/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml
@@ -17,15 +17,13 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>undertow-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml
index 2370a4da6166..10860ae4d26e 100644
--- a/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml
@@ -16,13 +16,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>undertow-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml
index 791d7ec65cd8..a908a969ed1b 100644
--- a/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-xmemcached-2.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-test-tools/pom.xml b/apm-sniffer/apm-test-tools/pom.xml
index bf4eaf6f358b..ae4cc2c29312 100644
--- a/apm-sniffer/apm-test-tools/pom.xml
+++ b/apm-sniffer/apm-test-tools/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-test-tools</artifactId>
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml
index e1dfc473d9c5..941f8c80cbda 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml
index 701ebd7d26ba..aef3821ff3d2 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml
index 30f0475e00f6..b00c27d31eca 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml
index c3fac6c841a9..5970aae176f2 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml
index 368664ce9c47..53d4d54f06fc 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/pom.xml
index dbde36fff543..c73bd942beb8 100644
--- a/apm-sniffer/apm-toolkit-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sniffer</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml b/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml
index 8640d285f7c6..ea172fb07f3c 100644
--- a/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml
+++ b/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>optional-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml b/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml
index 79a4622d2058..4efe3e8fe6ac 100644
--- a/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml
+++ b/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>optional-spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>jar</packaging>
diff --git a/apm-sniffer/optional-plugins/pom.xml b/apm-sniffer/optional-plugins/pom.xml
index 023545f24b7b..3d71e143ff84 100644
--- a/apm-sniffer/optional-plugins/pom.xml
+++ b/apm-sniffer/optional-plugins/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sniffer</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml b/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml
index ac0fee74ce0b..31c52624df6d 100644
--- a/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml
+++ b/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml
@@ -16,12 +16,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>optional-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/pom.xml b/apm-sniffer/pom.xml
index ceca9d6ee6db..ec98748352e4 100644
--- a/apm-sniffer/pom.xml
+++ b/apm-sniffer/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-webapp/pom.xml b/apm-webapp/pom.xml
index da9c6515618e..835e24fc486f 100644
--- a/apm-webapp/pom.xml
+++ b/apm-webapp/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/pom.xml b/oap-server/pom.xml
index a722022a419f..e051e4edf393 100644
--- a/oap-server/pom.xml
+++ b/oap-server/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-alarm-plugin/pom.xml b/oap-server/server-alarm-plugin/pom.xml
index 14fea192eacc..61b1ce406dbf 100644
--- a/oap-server/server-alarm-plugin/pom.xml
+++ b/oap-server/server-alarm-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml b/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml
index 49fb18b9cb55..3d3cb5053a6c 100644
--- a/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-cluster-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml b/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml
index c1269ae81408..67163d78e186 100644
--- a/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-cluster-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml b/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml
index 0ba6843d052f..9b1c7fd4bf27 100644
--- a/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>server-cluster-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/pom.xml b/oap-server/server-cluster-plugin/pom.xml
index 2e6598061791..df9b796cd7aa 100644
--- a/oap-server/server-cluster-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-core/pom.xml b/oap-server/server-core/pom.xml
index b9b9154064c9..38999425776b 100644
--- a/oap-server/server-core/pom.xml
+++ b/oap-server/server-core/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-buffer/pom.xml b/oap-server/server-library/library-buffer/pom.xml
index 852e31632eb0..1070ad7376f8 100644
--- a/oap-server/server-library/library-buffer/pom.xml
+++ b/oap-server/server-library/library-buffer/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-client/pom.xml b/oap-server/server-library/library-client/pom.xml
index 26cc854b1f61..70f8f9674122 100644
--- a/oap-server/server-library/library-client/pom.xml
+++ b/oap-server/server-library/library-client/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-module/pom.xml b/oap-server/server-library/library-module/pom.xml
index 6df06f1069a8..859c79444854 100644
--- a/oap-server/server-library/library-module/pom.xml
+++ b/oap-server/server-library/library-module/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-server/pom.xml b/oap-server/server-library/library-server/pom.xml
index da3e9d5c53b6..037e59ee3672 100644
--- a/oap-server/server-library/library-server/pom.xml
+++ b/oap-server/server-library/library-server/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-util/pom.xml b/oap-server/server-library/library-util/pom.xml
index 23e80456d7de..6e9112b3eb53 100644
--- a/oap-server/server-library/library-util/pom.xml
+++ b/oap-server/server-library/library-util/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/pom.xml b/oap-server/server-library/pom.xml
index ac79fb6d1ae8..725e806ab71d 100644
--- a/oap-server/server-library/pom.xml
+++ b/oap-server/server-library/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-query-plugin/pom.xml b/oap-server/server-query-plugin/pom.xml
index 2d388c424de4..954f9fbe067a 100644
--- a/oap-server/server-query-plugin/pom.xml
+++ b/oap-server/server-query-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-query-plugin/query-graphql-plugin/pom.xml b/oap-server/server-query-plugin/query-graphql-plugin/pom.xml
index e550381cb795..940bac1887ac 100644
--- a/oap-server/server-query-plugin/query-graphql-plugin/pom.xml
+++ b/oap-server/server-query-plugin/query-graphql-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-query-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/pom.xml
index 0ad99c3d7358..af684dffebcf 100644
--- a/oap-server/server-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml
index 786b6d6b8829..1d0763103f5c 100644
--- a/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml
index 05381520a509..89a94f1e9137 100644
--- a/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml
index 43a835120364..f9ae64033728 100644
--- a/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml
index 3277ed59e2ad..c86418c6b45a 100644
--- a/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml
index c32295abd291..81a1bb757013 100644
--- a/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml
index 8dcf89a747de..1eed0f4a2c32 100644
--- a/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-starter/pom.xml b/oap-server/server-starter/pom.xml
index 91bf853a6ae9..a91a6b34bb47 100644
--- a/oap-server/server-starter/pom.xml
+++ b/oap-server/server-starter/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-storage-plugin/pom.xml b/oap-server/server-storage-plugin/pom.xml
index 48d5ac9b4ae7..6f0374754f48 100644
--- a/oap-server/server-storage-plugin/pom.xml
+++ b/oap-server/server-storage-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml
index 737e4ffbb7eb..b64ba66d09db 100644
--- a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml
+++ b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-storage-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml b/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml
index 523467ea5d75..31a2ca6ec998 100644
--- a/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml
+++ b/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-storage-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index 8490ad6cd242..136e48442ca7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,13 +17,12 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.apache.skywalking</groupId>
     <artifactId>apm</artifactId>
-    <version>6.0.0-alpha-SNAPSHOT</version>
+    <version>6.0.0-alpha</version>
 
     <parent>
         <groupId>org.apache</groupId>
@@ -77,7 +76,7 @@
         <url>https://github.com/apache/incubator-skywalking</url>
         <connection>scm:git:https://github.com/apache/incubator-skywalking.git</connection>
         <developerConnection>scm:git:https://github.com/apache/incubator-skywalking.git</developerConnection>
-        <tag>HEAD</tag>
+        <tag>v6.0.0-alpha</tag>
     </scm>
 
     <issueManagement>