diff --git a/.github/workflows/testing.yaml b/.github/workflows/testing.yaml
index d8620cb..c2910a8 100644
--- a/.github/workflows/testing.yaml
+++ b/.github/workflows/testing.yaml
@@ -79,7 +79,7 @@ jobs:
 
             # https://github.com/codecov/codecov-action
             - name: "Upload coverage to Codecov"
-              uses: codecov/codecov-action@v3
+              uses: codecov/codecov-action@v4
               with:
                   fail_ci_if_error: false # optional (default = false)
                   # files: var/html/coverage/coverage.xml, # optional