diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 42f844a..bebb2ad 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -63,7 +63,7 @@ jobs:
 
     - name: Submit code coverage
       if: success() && matrix.php-version == '8.1'
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
 
   cs-stan:
     name: Coding Standard & Static Analysis