diff --git a/hack/bump-version.sh b/hack/bump-version.sh
index ffe03ac5db..90db0e070f 100755
--- a/hack/bump-version.sh
+++ b/hack/bump-version.sh
@@ -23,7 +23,7 @@ fi
 
 # parameters
 OPERATOR_OLD="v1\.6\.0-alpha.1"
-OPERATOR_NEW="v1\.6.0-alpha.2"
+OPERATOR_NEW="v1\.6\.0-alpha.2"
 TIDB_OLD="v6\.1\.0"
 TIDB_NEW="v6\.5\.0"
 DM_OLD="v6.1.0"