diff --git a/docker/assertj/pom.xml b/docker/assertj/pom.xml
index 59535a542..0e8a4c914 100644
--- a/docker/assertj/pom.xml
+++ b/docker/assertj/pom.xml
@@ -27,7 +27,7 @@
     <dependency>
       <groupId>org.spockframework</groupId>
       <artifactId>spock-core</artifactId>
-      <version>1.0-groovy-2.4</version>
+      <version>2.0-groovy-3.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>