diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 8745d61530..aa284600fd 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -88,6 +88,7 @@ jobs:
         python-version: ${{ matrix.pyv }}
     - uses: hynek/setup-cached-uv@v2
       with:
+        cache-suffix: ${{ matrix.pyv }}
         cache-dependency-path: pyproject.toml
     - run: uv pip install -e ".[dev]" pytest-split --system
       env: