diff --git a/.codecov.yml b/.codecov.yml
index 1ca69c2b9f..f7bc56c7c1 100644
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -1,8 +1,8 @@
-comment: false
+comment: false # Ref: https://docs.codecov.io/docs/pull-request-comments
 
 coverage:
   status:
     project:
       default:
-        threshold: 2%
+        threshold: 2% # Ref: https://docs.codecov.io/docs/codecovyml-reference#coveragestatus
         target: auto