diff --git a/pom.xml b/pom.xml
index e9ba96c..d56d1b2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
             <scope>compile</scope>
             <groupId>org.codehaus.groovy</groupId>
             <artifactId>groovy-all</artifactId>
-            <version>2.3.11</version>
+            <version>2.4.21</version>
         </dependency>
         <dependency>
             <groupId>org.spockframework</groupId>