diff --git a/.github/workflows/publish-build-tools.yml b/.github/workflows/publish-build-tools.yml
index 1cd809139..de828eeed 100644
--- a/.github/workflows/publish-build-tools.yml
+++ b/.github/workflows/publish-build-tools.yml
@@ -46,8 +46,11 @@ jobs:
     - name: Generate tag
       id: tag
       run: |
-        TAG="ubuntu-${{ github.event.inputs.ubuntu_version }}-bazel-${{ github.event.inputs.bazel_version }}"
+        TAG="ubuntu-${GITHUB_EVENT_INPUTS_UBUNTU_VERSION}-bazel-${GITHUB_EVENT_INPUTS_BAZEL_VERSION}"
         echo "tag=$TAG" >> $GITHUB_OUTPUT
+      env:
+        GITHUB_EVENT_INPUTS_UBUNTU_VERSION: ${{ github.event.inputs.ubuntu_version }}
+        GITHUB_EVENT_INPUTS_BAZEL_VERSION: ${{ github.event.inputs.bazel_version }}
 
     - name: Login to GitHub Container Registry
       if: ${{ !github.event.inputs.draft }}