diff --git a/build.gradle b/build.gradle
index 74e59006..a979aa27 100644
--- a/build.gradle
+++ b/build.gradle
@@ -30,8 +30,8 @@ repositories {
 }
 
 java {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
 }
 
 if (project.hasProperty('mainClass')) {