diff --git a/pom.xml b/pom.xml
index c3bf35f..4c20f8e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>org.codehaus.groovy</groupId>
             <artifactId>groovy</artifactId>
-            <version>2.4.5</version>
+            <version>2.4.21</version>
         </dependency>
 
         <dependency>