diff --git "a/docs/\351\235\242\350\257\225\347\273\217\351\252\214.md" "b/docs/\351\235\242\350\257\225\347\273\217\351\252\214.md"
index cd7a67f..45adf16 100644
--- "a/docs/\351\235\242\350\257\225\347\273\217\351\252\214.md"
+++ "b/docs/\351\235\242\350\257\225\347\273\217\351\252\214.md"
@@ -105,8 +105,9 @@
 
 ## 2021届
 
-> Date：2020-03-09
+> Date：2020-05-27
 
+- [ ] [一文梳理常见机器学习面试题](https://zhuanlan.zhihu.com/p/82105066)
 - [ ] [2021届校招算法岗知识点总结](https://zhuanlan.zhihu.com/p/107911095)
 - [ ] [Machine Learning Interview Questions](https://github.com/andrewekhalel/MLQuestions)
 - [ ] [160+ Data Science Interview Questions](https://hackernoon.com/160-data-science-interview-questions-415s3y2a)