diff --git a/pom.xml b/pom.xml
index 838c65b2680..6c500d4c022 100644
--- a/pom.xml
+++ b/pom.xml
@@ -70,7 +70,7 @@
              JNR has broken compatibility between minor versions in the past. -->
         <jnr-ffi.version>2.2.16</jnr-ffi.version>
         <jnr-posix.version>3.1.15</jnr-posix.version>
-        <groovy.version>2.4.7</groovy.version>
+        <groovy.version>2.4.21</groovy.version>
         <jax-rs.version>2.0.1</jax-rs.version>
         <jersey.version>2.23.1</jersey.version>
         <hk2.version>2.4.0-b34</hk2.version>