diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 088ba02..8e657a4 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -59,7 +59,7 @@ jobs:
 
       # 8. Upload coverage to Codecov (requires CODECOV_TOKEN for private repos)
       - name: Upload test results to Codecov
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
         with:
           files: ./coverage.xml
           flags: unittests