diff --git a/build.gradle b/build.gradle
index f57e7d26239..f9925ec5a6f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -200,7 +200,11 @@ subprojects { project ->
     dependencies {
         compile groovyDependency
 
-        testCompile("org.codehaus.groovy:groovy-test:${groovyVersion}")
+        testCompile "org.codehaus.groovy:groovy-test:${groovyVersion}", {
+            exclude group:'junit', module: 'junit'
+            exclude group:'org.codehaus.groovy', module: 'groovy'
+            exclude group:'org.hamcrest', module: 'hamcrest-core'
+        }
 
         if (project.name != "grails-docs") {
             // Logging
diff --git a/grails-docs/build.gradle b/grails-docs/build.gradle
index 40929755eac..793559f89e2 100644
--- a/grails-docs/build.gradle
+++ b/grails-docs/build.gradle
@@ -21,6 +21,8 @@ dependencies {
     testCompile "junit:junit:$junitVersion"
     testCompile("org.spockframework:spock-core:${spockVersion}") {
         transitive = false
+        exclude group:'junit', module: 'junit-dep'    
+        exclude group:'org.codehaus.groovy', module: 'groovy-all'    
     }
 }
 
diff --git a/grails-plugin-testing/build.gradle b/grails-plugin-testing/build.gradle
index b7e0081263b..ee032491b76 100644
--- a/grails-plugin-testing/build.gradle
+++ b/grails-plugin-testing/build.gradle
@@ -17,9 +17,12 @@ dependencies {
     }
     compile "org.springframework.boot:spring-boot-starter-test:$springBootVersion"
     compile("org.spockframework:spock-spring:${spockVersion}") {
+        transitive = false
+        exclude group:'junit', module: 'junit-dep'
         exclude group:'org.codehaus.groovy', module: 'groovy-all'
     }
     compile("org.spockframework:spock-core:${spockVersion}") {
+        transitive = false
         exclude group:'junit', module: 'junit-dep'
         exclude group:'org.codehaus.groovy', module: 'groovy-all'
     }
diff --git a/grails-test/build.gradle b/grails-test/build.gradle
index f7bdf9b5416..04c79fac630 100644
--- a/grails-test/build.gradle
+++ b/grails-test/build.gradle
@@ -3,11 +3,17 @@ dependencies {
     compile "org.springframework:spring-tx:${springVersion}"
 
     // Testing
-    compile "org.codehaus.groovy:groovy-test:$groovyVersion"
+    compile "org.codehaus.groovy:groovy-test:$groovyVersion", {
+        transitive = false
+        exclude group:'junit', module: 'junit'
+        exclude group:'org.codehaus.groovy', module: 'groovy'
+        exclude group:'org.hamcrest', module: 'hamcrest-core'
+    }
     compile "junit:junit:${junitVersion}", {
         exclude group:'org.hamcrest', module: 'hamcrest-core'
     }
     compile("org.spockframework:spock-core:${spockVersion}") {
+        transitive = false
         exclude group:'junit', module: 'junit-dep'
         exclude group:'org.codehaus.groovy', module: 'groovy-all'
     }