diff --git a/.github/workflows/cooker-selfhosted.yml b/.github/workflows/cooker-selfhosted.yml
index bf1ae8cd..84c8bf7d 100644
--- a/.github/workflows/cooker-selfhosted.yml
+++ b/.github/workflows/cooker-selfhosted.yml
@@ -65,7 +65,7 @@ jobs:
       - name: "Generate version tag"
         run: |
           source automation_tools/version_extractor.sh
-          manifest_version="$($fetch_manifest_version)"
+          echo "MANIFEST_VERSION=$($fetch_manifest_version)" >> $GITHUB_ENV
           if [[ "$BRANCH_NAME" == 'refs/'* ]]; then
             pr_number=$(echo ${{env.BRANCH_NAME}} | awk -F'/' '{print $3}')
             source_branch=$(curl -s "https://api.github.com/repos/XargonWan/RetroDECK/pulls/$pr_number" | jq -r '.head.ref')
@@ -73,7 +73,7 @@ jobs:
             echo "[DEBUG] source branch is: $source_branch"
             echo "TAG=PR-$pr_number-$source_branch-${{ env.buildid }}" >> $GITHUB_ENV
           else
-            echo "TAG=${{$manifest_version}}-${{ env.buildid }}" >> $GITHUB_ENV
+            echo "TAG=${{ env.MANIFEST_VERSION }}-${{ env.buildid }}" >> $GITHUB_ENV
           fi
           echo "Version TAG: ${{ env.TAG }}"