diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index e2b1e49..c6bc3d3 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -20,9 +20,10 @@ jobs:
     - name: Test with pytest
       run: pytest --cov=./ --cov-report=xml
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         files: ./coverage.xml
         flags: unittests
         fail_ci_if_error: true
         verbose: true
+        token: ${{ secrets.CODECOV_TOKEN }}