diff --git a/.github/workflows/climpred_testing.yml b/.github/workflows/climpred_testing.yml
index 64f368407..7f84f6734 100644
--- a/.github/workflows/climpred_testing.yml
+++ b/.github/workflows/climpred_testing.yml
@@ -121,7 +121,7 @@ jobs:
         run: |
           pytest -n 4 --durations=20 --cov=climpred --cov-report=xml
       - name: Upload coverage to codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.xml