diff --git a/README-ja.md b/README-ja.md
index 37275585..3920ea07 100644
--- a/README-ja.md
+++ b/README-ja.md
@@ -1730,9 +1730,9 @@ Notes
 * [Microsoft Engineering](https://engineering.microsoft.com/)
 * [Microsoft Python Engineering](https://blogs.msdn.microsoft.com/pythonengineering/)
 * [Netflix Tech Blog](http://techblog.netflix.com/)
-* [Paypal Developer Blog](https://devblog.paypal.com/category/engineering/)
+* [Paypal Developer Blog](https://medium.com/paypal-engineering)
 * [Pinterest Engineering Blog](http://engineering.pinterest.com/)
-* [Quora Engineering](https://engineering.quora.com/)
+* [Engineering](https://www.quora.com/q/quoraengineering)
 * [Reddit Blog](http://www.redditblog.com/)
 * [Salesforce Engineering Blog](https://developer.salesforce.com/blogs/engineering/)
 * [Slack Engineering Blog](https://slack.engineering/)