diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 73af436..8c03df7 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -27,6 +27,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         python -m pip install --prefer-binary --editable .[dev]
+        python -m pip install --prefer-binary --editable .[fast]
         if [ $(python -c "import sys; print(sys.version[:3])") != 3.4 ]; then python -m pip install --prefer-binary --editable .[fast]; fi
     - name: Lint with flake8
       run: |