diff --git a/ocpp-v1_6-test/pom.xml b/ocpp-v1_6-test/pom.xml
index 4a75d63e..0258275b 100644
--- a/ocpp-v1_6-test/pom.xml
+++ b/ocpp-v1_6-test/pom.xml
@@ -65,7 +65,7 @@
         <dependency>
             <groupId>org.spockframework</groupId>
             <artifactId>spock-core</artifactId>
-            <version>2.3-groovy-4.0</version>
+            <version>2.4-groovy-5.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>