diff --git a/.github/workflows/runtests.yml b/.github/workflows/runtests.yml
index fc50491..a21330d 100644
--- a/.github/workflows/runtests.yml
+++ b/.github/workflows/runtests.yml
@@ -15,7 +15,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Setup dependencies
-        run: pip install uv && uv pip install -r pyproject.toml
+        run: pip install uv && uv pip install --system -r pyproject.toml
       - name: Run tests
         env:
           DJANGO_SETTINGS_MODULE: config.settings