diff --git a/README.md b/README.md
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@@ -14,6 +14,8 @@ https://tm.recolic.net/
 
 **Update At 2019-04-23: 自动签到API发生了修改，请务必更新你的脚本，否则你可能失去生命。**
 
+**Update At 2019-05-21: 自动签到API再次发生了修改，暂时不要使用，正在更新脚本。**
+
 ## Hard PreRequirements
 
 Non-Windows OS. curl. bash. fish. awk. grep. One mp3 player available on command line.