diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 0afd2af..d2e1ff1 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -9,11 +9,15 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Install Eigen and Pybind11
-      run: sudo apt update && sudo apt install -y libeigen3-dev && pip3 install pybind11 pytest numpy scipy
-    - name: Compile
+    - name: Install python moduels
+      run: sudo apt update && sudo apt install -y libeigen3-dev && pip3 install pybind11 pytest numpy scipy cython
+    - name: Compile Bybind
       run: export CPATH=/usr/include/eigen3 && cd examples/python && source build.sh
-    - name: Test
+    - name: Test Bybind
       run: |
         cd examples/python
         python3 -m pytest -s -v test.py
+    - name: Run cython
+      run: |
+        cd examples/cython
+        python3 setup.py build_ext --inplace && python3 pygjk_trial.py