diff --git a/.github/workflows/update_singbox_core.yaml b/.github/workflows/update_singbox_core.yaml
index 32f805fe..2eeb8072 100644
--- a/.github/workflows/update_singbox_core.yaml
+++ b/.github/workflows/update_singbox_core.yaml
@@ -88,7 +88,7 @@ jobs:
           git fetch --tags sekai
           version=$(CGO_ENABLED=0 go run ./cmd/internal/read_tag)
           [ -z "$version" ] &&  version=${{ inputs.tag2 }}
-          version=$(echo $version | sed 's/-.*$//')
+          version=$(echo ${version%-*})
           echo version=$version >> $GITHUB_OUTPUT
           if [ -z "$TAGS" ];then
             if [ "$REPO" = 'SagerNet/sing-box' ];then