diff --git a/.github/workflows/build_pkg.yml b/.github/workflows/build_pkg.yml
index dfe3c45..cf4aaad 100644
--- a/.github/workflows/build_pkg.yml
+++ b/.github/workflows/build_pkg.yml
@@ -32,6 +32,10 @@ on:
       message:
         type: string
         default: ""
+
+env:
+    GH_TOKEN: ${{ github.token }}
+
 jobs:
   source:
     name: source package
@@ -51,6 +55,9 @@ jobs:
           repository: ${{ inputs.repository }}
           ref: ${{ inputs.ref }}
           path: input
+      - name: Check if workflow is triggered by a tag
+        if: !startsWith(github.ref, 'refs/tags/')
+        run: echo "Not triggered by tag. Cancel workflow." && gh run cancel ${{ github.run_id }}
       - name: pull build container
         run: podman pull "${{ inputs.build_container }}:amd64"
       - name: fetch dependencies