diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 48ec9ba..e74fb41 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -47,7 +47,7 @@ jobs:
         uv run pytest --cov=src/mcp_as_a_judge --cov-report=xml --cov-report=term-missing
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         file: ./coverage.xml
         fail_ci_if_error: false