diff --git a/gradle.properties b/gradle.properties
index 480bb1d..420c669 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,7 +1,7 @@
 antlrVersion=2.7.7
 apacheGeodeVersion=1.9.2
 apacheTaglibsStandardVersion=1.2.5
-groovyVersion=2.4.20
+groovyVersion=2.4.21
 javaxServletJspJstlApiVersion=1.2.1
 multithreadedtcVersion=1.01
 pivotalGemFireVersion=9.8.10