diff --git a/README.md b/README.md
index 181cc29..14047ea 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,9 @@ BenchmarkLogRotation-10               	    9712	    143824 ns/op	    9707 B/op
 ```
 
 
-## Credits
+## CHANGE LOG
 
-1. https://github.com/rakutentech/go-alertnotification
+- v1.0.0: Initial release
+- v2.0.0: Fixed log rotation issue and tail issues
+- v2.0.11: Fixed invalid db issue on race, and use bytes instead of strings