diff --git a/.coveragerc b/.coveragerc
index 10530e8c5..9f2015df3 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -2,9 +2,10 @@
 branch = True
 concurrency = multiprocessing
 data_file = .test_reports/.coverage
-source =
-    scilpy/
-    scripts/
+relative_files = True
+source_pkgs =
+    scilpy
+    scripts
 omit =
     scripts/tests/*.py
     scilpy/tests/**/*.py
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 740cf4692..ff4f3bf28 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -56,16 +56,15 @@ jobs:
           pytest --cov-report term-missing:skip-covered
 
       - name: Upload coverage reports to Codecov
-        uses: codecov/codecov-action@v3
-        env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        uses: codecov/codecov-action@v4
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
           flags: unittests
           name: scilpy-unittests-${{ github.run_id }}
           verbose: true
           directory: .test_reports/
           fail_ci_if_error: true
-          root_dir: $GITHUB_WORKSPACE/scilpy/
+          plugin: pycoverage
 
       - name: Upload test reports and coverage to artifacts
         uses: actions/upload-artifact@v4.3.1