diff --git a/.github/workflows/build_pkg.yml b/.github/workflows/build_pkg.yml
index dfe3c45..561798c 100644
--- a/.github/workflows/build_pkg.yml
+++ b/.github/workflows/build_pkg.yml
@@ -32,9 +32,14 @@ on:
       message:
         type: string
         default: ""
+
+env:
+    GH_TOKEN: ${{ github.token }}
+
 jobs:
   source:
     name: source package
+    if: startsWith(github.ref, 'refs/tags/')
     outputs:
       pkg: ${{ steps.build.outputs.pkg }}
       build_options: ${{ steps.build.outputs.build_options }}