diff --git a/cas-client-core/pom.xml b/cas-client-core/pom.xml
index d763a57..804644b 100644
--- a/cas-client-core/pom.xml
+++ b/cas-client-core/pom.xml
@@ -14,7 +14,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>2.6</version>
+                <version>3.1.1</version>
                 <executions>
                     <execution>
                         <goals>