diff --git a/xCAT-client/xCAT-client.spec b/xCAT-client/xCAT-client.spec
index 14b085b59..a456b45a0 100644
--- a/xCAT-client/xCAT-client.spec
+++ b/xCAT-client/xCAT-client.spec
@@ -2,7 +2,7 @@ Summary: Core executables and data of the xCAT management project
 Name: xCAT-client
 Version: %(cat Version)
 Release: snap%(date +"%Y%m%d%H%M")
-Epoch: 5
+Epoch: 4
 License: EPL
 Group: Applications/System
 Source: xCAT-client-%(cat Version).tar.gz