diff --git a/subprojects/groovy-test/build.gradle b/subprojects/groovy-test/build.gradle
index 655944cb0b..604a54a9da 100644
--- a/subprojects/groovy-test/build.gradle
+++ b/subprojects/groovy-test/build.gradle
@@ -17,6 +17,7 @@
  *  under the License.
  */
 plugins {
+    id 'com.github.johnrengelman.shadow' version '7.1.2'
     id 'org.apache.groovy-library'
 }