diff --git a/.github/workflows/integration.yml b/.github/workflows/integration.yml
index 3f9d1efc..538d8fe1 100644
--- a/.github/workflows/integration.yml
+++ b/.github/workflows/integration.yml
@@ -72,7 +72,7 @@ jobs:
       - name: Python setup
         run: |
           python -m pip install --upgrade pip
-          python -m pip install tox
+          python -m pip install tox cython
       
       - name: Run Unit Tests
         run: tox -e unit