diff --git a/build.gradle b/build.gradle
index 6f583fb..461d162 100644
--- a/build.gradle
+++ b/build.gradle
@@ -48,7 +48,7 @@ dependencies {
     compile "com.graphql-java:graphql-java:20.3"
 
     testImplementation 'org.spockframework:spock-core:1.3-groovy-2.5'
-    testImplementation('org.codehaus.groovy:groovy:2.5.13')
+    testImplementation('org.codehaus.groovy:groovy:3.0.18')
 
 }