diff --git a/pom.xml b/pom.xml
index 57a2e2b..f2a108c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
     <dependency>
       <groupId>org.codehaus.groovy</groupId>
       <artifactId>groovy-all</artifactId>
-      <version>2.4.13</version>
+      <version>2.4.21</version>
     </dependency>
     <dependency>
       <groupId>org.javassist</groupId>