diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9f66924..fc9469a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,7 +42,11 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: "3.11"
+      - name: Create virtual environment
+        run: python -m venv .venv
       - name: Install dependencies
-        run: pip install -e ".[dev]"
+        run: |
+          .venv/bin/python -m pip install --upgrade pip
+          .venv/bin/python -m pip install -e ".[dev]"
       - name: Run tests
-        run: pytest -q
+        run: .venv/bin/pytest -q