diff --git a/config/config.local.js b/config/config.local.js
index 5735386..2fe08a2 100644
--- a/config/config.local.js
+++ b/config/config.local.js
@@ -20,5 +20,7 @@ module.exports = () => {
     enable: false,
     defaultHost: '',
   };
+
+  // inject-extra-config
   return config;
 };
diff --git a/config/config.unittest.js b/config/config.unittest.js
index 19b97cb..b3f4ae9 100644
--- a/config/config.unittest.js
+++ b/config/config.unittest.js
@@ -7,5 +7,7 @@ module.exports = appInfo => {
 
   config.sequelize = dbConfig.test;
   config.keys = appInfo.name + '_unittest_key';
+
+  // inject-extra-config
   return config;
 };