diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index f1a7343..62faf0c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -116,7 +116,7 @@ jobs:
       with:
         path: .tox
         # Include python version and os in the cache key
-        key: tox-v1-${{ runner.os }}-py${{ matrix.python-version }}-${{ hashFiles('tox.ini', 'pyproject.toml') }}
+        key: tox-v1-${{ runner.os }}-py${{ matrix.python-version }}-${{ hashFiles('pyproject.toml') }}
         restore-keys: |
           tox-v1-${{ runner.os }}-py${{ matrix.python-version }}-
           tox-v1-${{ runner.os }}-