diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index e09a2188e..e67eee83d 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -87,8 +87,9 @@ jobs:
             .test_report_optionals.xml
 
       - name: Submit coverage
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           env_vars: OS,PYTHON
           name: ${{ matrix.os }}-${{ matrix.python-version }}
           fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}