diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index efcae5c..3c6f580 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -63,8 +63,11 @@ jobs:
         uv pip install streamlit=="${STREAMLIT_VERSION}"
       env:
         STREAMLIT_VERSION: ${{ matrix.streamlit-version }}
-    - name: Install dependencies
-      run: uv sync
+    - name: Set up venv and install dependencies
+      run: |
+        uv venv .venv
+        echo "VIRTUAL_ENV=.venv" >> $GITHUB_ENV
+        uv sync
     - name: Show Python and Streamlit versions
       run: |
         python -V