diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 5ab2850..b85c480 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -72,7 +72,7 @@ jobs:
           cd tests
           pytest --cov=kliff --cov-report=xml
 
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.10' && github.repository == 'openkim/kliff'
         with:
           token: ${{ secrets.CODECOV_TOKEN }}