diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index 80a4d84..7502a22 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -29,3 +29,7 @@ jobs:
     - name: Test with pytest
       run: |
         pytest --doctest-modules
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v3
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}