diff --git a/build.gradle b/build.gradle
index 744d5f1dd5118527d4d4d6b0040f6cf2199195b4..a397672b6bf2aaf9c98304422960195ac2771523 100644
--- a/build.gradle
+++ b/build.gradle
@@ -54,7 +54,9 @@ subprojects {
      * sbt有点慢，所以用了gradle，其他sbt项目不好继承进来，PS：降低编译速度
      */
     dependencies {
+        //because some test write in src/main/java
         compile group: 'junit', name: 'junit', version: '4.12'
+        compile group: 'org.hamcrest', name: 'hamcrest-core', version: '1.3'
         compile group: 'org.scala-lang', name: 'scala-library', version: '2.12.8'
         compile group: 'org.scala-lang', name: 'scala-reflect', version: '2.12.8'
         compile group: 'com.diffplug.spotless', name: 'spotless-plugin-gradle', version: '4.5.0'
diff --git a/java-examples/build.gradle b/java-examples/build.gradle
index 7a554dd93c14b32e193834ff7b0e51bdb5655dbc..74fa4aebbf944514c4d4b40b3d9b2950fb855c02 100644
--- a/java-examples/build.gradle
+++ b/java-examples/build.gradle
@@ -7,5 +7,4 @@ dependencies {
     compile group: 'org.ow2.asm', name: 'asm-all', version: '5.1'
     compile group: 'com.alibaba', name: 'fastjson', version: '1.2.29'
     compile group: 'io.reactivex.rxjava2', name: 'rxjava', version: '2.2.15'
-    testCompile group: 'org.hamcrest', name: 'hamcrest-core', version: '1.3'
 }
\ No newline at end of file
diff --git a/scala-utils/build.gradle b/scala-utils/build.gradle
index fa480ae8920e6ff4d504291d629a62a0ddafb4cc..25de7c15ec8af1eedb6bb296783f9265fce929b9 100644
--- a/scala-utils/build.gradle
+++ b/scala-utils/build.gradle
@@ -14,6 +14,4 @@ dependencies {
     compile group: 'org.tpolecat', name: 'doobie-core_2.12', version: '0.7.0'
     compile group: 'org.postgresql', name: 'postgresql', version: '42.2.5'
 
-    testCompile group: 'org.hamcrest', name: 'hamcrest-core', version: '1.3'
-
 }
\ No newline at end of file