diff --git a/pom.xml b/pom.xml
index 7244431..aa63ce4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -65,7 +65,7 @@
             <groupId>org.codehaus.groovy</groupId>
             <artifactId>groovy-all</artifactId>
             <classifier>indy</classifier>
-            <version>2.4.13</version>
+            <version>2.4.21</version>
             <optional>true</optional>
         </dependency>
         <dependency>