diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 5772b3a04b..5c312e491a 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -191,7 +191,7 @@ jobs:
         run: >-
           echo "key=venv-${{ env.CACHE_VERSION }}-${{
             hashFiles('setup.cfg', 'requirements_test_min.txt')
-          }}" >> $GITHUB_OUTPUT
+          }}" >> $env:GITHUB_OUTPUT
       - name: Restore Python virtual environment
         id: cache-venv
         uses: actions/cache@v3.0.11