diff --git a/pom.xml b/pom.xml
index 724350e..4d408d1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -260,7 +260,7 @@
                         <groupId>org.codehaus.groovy</groupId>
                         <artifactId>groovy-all</artifactId>
                         <!-- any version of Groovy \>= 1.5.0 should work here -->
-                        <version>2.4.8</version>
+                        <version>2.4.21</version>
                         <scope>runtime</scope>
                     </dependency>
                 </dependencies>