diff --git a/ls-rpc/ls-rpc-netty-sample/pom.xml b/ls-rpc/ls-rpc-netty-sample/pom.xml
index 10d9052..54cc67e 100644
--- a/ls-rpc/ls-rpc-netty-sample/pom.xml
+++ b/ls-rpc/ls-rpc-netty-sample/pom.xml
@@ -22,7 +22,7 @@
         <version.zookeeper>3.4.6</version.zookeeper>
         <version.zkclient>0.4</version.zkclient>
         <version.commons-lang>3.3.2</version.commons-lang>
-        <version.commons-collections>4.0</version.commons-collections>
+        <version.commons-collections>4.1</version.commons-collections>
         <version.maven-compiler-plugin>3.2</version.maven-compiler-plugin>
         <version.maven-surefire-plugin>2.18.1</version.maven-surefire-plugin>
         <version.maven-source-plugin>2.4</version.maven-source-plugin>