diff --git a/desigin_pattern_advance/pom.xml b/desigin_pattern_advance/pom.xml
index 9a764f1..6f28a24 100644
--- a/desigin_pattern_advance/pom.xml
+++ b/desigin_pattern_advance/pom.xml
@@ -132,7 +132,7 @@
         <dependency>
             <groupId>commons-collections</groupId>
             <artifactId>commons-collections</artifactId>
-            <version>3.2.1</version>
+            <version>3.2.2</version>
         </dependency>