diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index d914f876..5d402f9f 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -75,10 +75,10 @@ jobs:
         run: python -m pytest -v --cov=openff --cov-config=setup.cfg openff/bespokefit/_tests/ --cov-report=xml
 
       - name: Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
-          file: ./coverage.xml
+          files: ./coverage.xml
           fail_ci_if_error: false
 
       - name: Run Integration Tests