diff --git a/pkg/deb/DEBIAN/postinst b/pkg/deb/DEBIAN/postinst
index 69b57f1..b301de4 100644
--- a/pkg/deb/DEBIAN/postinst
+++ b/pkg/deb/DEBIAN/postinst
@@ -48,6 +48,7 @@ else
       cp -rf $RootDir/default/omc.yaml $RootDir/omc.yaml
     fi
 
+    systemctl stop omc.service
     bash $RootDir/script/setup.sh -u
     if [ $? -ne 0 ]; then
         echo "Upgrade failed."
diff --git a/pkg/rpm/SPECS/omc.spec b/pkg/rpm/SPECS/omc.spec
index 9d034fb..5f0f12e 100644
--- a/pkg/rpm/SPECS/omc.spec
+++ b/pkg/rpm/SPECS/omc.spec
@@ -80,6 +80,7 @@ else
       cp -rf $RootDir/default/omc.yaml $RootDir/omc.yaml
     fi
 
+    systemctl stop omc.service
     bash $RootDir/script/setup.sh -u
     if [ $? -ne 0 ]; then
         echo "Upgrade failed."