diff --git a/vault-upgrade-hook/pom.xml b/vault-upgrade-hook/pom.xml
index 5c601d3..5365168 100644
--- a/vault-upgrade-hook/pom.xml
+++ b/vault-upgrade-hook/pom.xml
@@ -109,7 +109,7 @@
         <dependency>
             <groupId>org.codehaus.groovy</groupId>
             <artifactId>groovy-all</artifactId>
-            <version>2.4.15</version>
+            <version>2.4.21</version>
             <optional>true</optional>
         </dependency>
         <dependency>