diff --git a/action.yml b/action.yml
index 7d983f1..f503bc3 100644
--- a/action.yml
+++ b/action.yml
@@ -25,7 +25,6 @@ runs:
     - run: $GITHUB_ACTION_PATH/action.bash
       shell: bash
       env:
-        GH_DEFAULT_BRANCH: ${{ github.event.repository.default_branch }}
         GH_MASTER_BRANCH: ${{ github.event.repository.master_branch }}
         GH_EVENT_NAME: ${{ github.event_name }}
         NPM_AUTH_TOKEN: ${{ inputs.npmAuthToken }}