diff --git a/groovy-spock/build.gradle b/groovy-spock/build.gradle
index d75db96..a07e2e6 100644
--- a/groovy-spock/build.gradle
+++ b/groovy-spock/build.gradle
@@ -8,7 +8,7 @@ repositories {
 }
 
 dependencies {
-    testImplementation 'org.spockframework:spock-core:2.4-M4-groovy-4.0'
+    testImplementation 'org.spockframework:spock-core:2.4-M5-groovy-4.0'
 }
 
 java {