diff --git a/.github/workflows/pytest.yaml b/.github/workflows/pytest.yaml
index 0857b57..92e0958 100644
--- a/.github/workflows/pytest.yaml
+++ b/.github/workflows/pytest.yaml
@@ -30,6 +30,6 @@ jobs:
           python-version: ${{ matrix.python-version }}
           enable-cache: true
       - name: Install corrlib
-        run: uv sync --locked --all-extras --dev
+        run: uv sync --locked --all-extras --dev --python="${{ matrix.python-version }}"
       - name: Run tests
         run: uv run pytest tests