diff --git a/.github/workflows/cov.yml b/.github/workflows/cov.yml
index 60583c4..a0420b4 100644
--- a/.github/workflows/cov.yml
+++ b/.github/workflows/cov.yml
@@ -30,7 +30,7 @@ jobs:
         go tool cover -func coverage3.out
         rm coverage2.out
         rm coverage.out
-    - uses: codecov/codecov-action@v3.1.4
+    - uses: codecov/codecov-action@v4.0.0
       with:
         token: ${{ secrets.CODECOV }}