diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 73d9e46..37c146a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -114,7 +114,7 @@ jobs:
         uses: actions/download-artifact@v4.1.0
         with: { name: code-coverage-report }
       - name: Send code coverage report to Codecov (codecov.io)
-        uses: codecov/codecov-action@v3.1.4
+        uses: codecov/codecov-action@v4.3.0
         with: { files: c.out }
 
   notify: