diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 84b9034..f905a1c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -29,7 +29,7 @@ jobs:
         uses: actions/cache@v2
         with:
           path: ${{ steps.pip-cache.outputs.dir }}
-          key: release-${{ hashFiles('**/setup.py') }}
+          key: release-${{ hashFiles('**/tox.ini') }}
           restore-keys: |
             release-