diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 7c4bdf41..d0608ae5 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -29,6 +29,7 @@ jobs:
           python -m pip install --upgrade pip
           pip install -e .
           pip install pytest
+          pip install pytest-cov
 
       - name: Run tests
-        run: pytest -v
+        run: pytest --cov=pyerrors -v