diff --git a/pom.xml b/pom.xml
index f20dcc6..165d8e2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -70,7 +70,7 @@
     <dependency>
       <groupId>org.codehaus.groovy</groupId>
       <artifactId>groovy</artifactId>
-      <version>2.4.20</version>
+      <version>2.4.21</version>
     </dependency>
 
     <dependency>