diff --git a/.github/workflows/unit_tests.yaml b/.github/workflows/unit_tests.yaml
index 36df42259..b0aec73b6 100644
--- a/.github/workflows/unit_tests.yaml
+++ b/.github/workflows/unit_tests.yaml
@@ -19,4 +19,9 @@ jobs:
       - name: Install devel dependencies
         run: pdm install --dev
       - name: Run unit tests
-        run: pdm run python -m pytest tests/unit --cov=ols --cov=runner --cov-report term-missing
+        run: pdm run python -m pytest tests/unit --cov=ols --cov=runner --cov-report xml
+
+      - name: Upload coverage reports to Codecov with GitHub Action (with token = main repo)
+        uses: codecov/codecov-action@v4
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}