diff --git a/build.gradle b/build.gradle
index 7834972..4d86b3a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -49,7 +49,7 @@ repositories {
 dependencies {
     compile "com.graphql-java:graphql-java:20.2"
 
-    testImplementation 'org.spockframework:spock-core:1.3-groovy-2.5'
+    testImplementation 'org.spockframework:spock-core:2.3-groovy-4.0'
     testImplementation('org.codehaus.groovy:groovy:2.5.13')
 
 }