diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a0e3d44..452610e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,7 +52,7 @@ jobs:
         id: check-tag
         run: |
           if [[ ${{ github.event.ref }} =~ ^refs/tags/[0-9]+\.[0-9]+\.[0-9]+(rc[0-9]*)?$ ]]; then
-              echo "{match}={true}" >> $GITHUB_OUTPUT
+              echo "match=true" >> $GITHUB_OUTPUT
           fi
       - name: Set up Python 3.7
         if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')