kc3-lang/md4c

diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index 96272fa..3ac481d 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -28,7 +28,9 @@ jobs:
           lcov --remove coverage.info '/usr/*' --output-file coverage.info
           lcov --list coverage.info
       - name: Upload coverage report
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
   linux-release:
     runs-on: ubuntu-latest