diff --git a/LICENSE b/LICENSE
index 3189284..686e2c5 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,8 @@
 The 996ICU License (996ICU)
 Copyright © 2019 <copyright holders>
 
-<wait to be filled...>
+996ICU clause: the source code is not permitted to use at 996ICU style work ( 9am-9pm, 6 day a week) environment.
+
+It is recommended to use as a clause of open souce common licence, such as MIT, BSD, GNU.
 
 https://github.com/996icu/996.ICU/pull/15642