diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 37d65f33d0..d59043306c 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -19,7 +19,14 @@ jobs:
         run: |
           python -m pip install tox
       - name: Run tests
-        run: tox
+        run: tox -- --cov-report xml
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v1
+        with:
+          flags: >-  # Mark which lines are covered by which envs
+            ${{ runner.os }},
+            ${{ matrix.python }}
+          functionalities: gcov  # disable C coverage autodiscovery
 
   release:
     needs: test