diff --git a/cas-client-core/pom.xml b/cas-client-core/pom.xml
index f798f26..2a54b15 100644
--- a/cas-client-core/pom.xml
+++ b/cas-client-core/pom.xml
@@ -34,7 +34,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
-                <version>3.2.0</version>
+                <version>3.1.1</version>
                 <executions>
                     <execution>
                         <goals>