diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 4bcf7e16427c..76a5f42eac62 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -83,6 +83,9 @@ One should not add property that has defined before by other implementation, or
 ## Reviewers guide
 Be willing to comment on the good points and not just the things you want fixed 💯
 
+読んでおくといいやつ
+- https://blog.lacolaco.net/posts/1e2cf439b3c2/
+
 ### Review perspective
 - Scope
 	- Are the goals of the PR clear?