diff --git a/pom.xml b/pom.xml
index 721e86a..e15242b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -161,7 +161,7 @@
         <dependency>
             <groupId>commons-collections</groupId>
             <artifactId>commons-collections</artifactId>
-            <version>3.2</version>
+            <version>3.2.2</version>
         </dependency>
         <!-- test -->
         <dependency>