diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
index 810de35c..0675d3e4 100644
--- a/.github/workflows/CI.yaml
+++ b/.github/workflows/CI.yaml
@@ -72,7 +72,7 @@ jobs:
           pytest -v --cov=openff --cov-config=setup.cfg openff/bespokefit/tests --cov-report=xml
 
       - name: Codecov
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           file: ./coverage.xml
           fail_ci_if_error: false