diff --git a/readme.md b/readme.md
index 3c023a7..eab569c 100644
--- a/readme.md
+++ b/readme.md
@@ -2,7 +2,7 @@
 - go版本chia签名, 参考python-impl实现部分功能，并非bls的完全实现
 
 ## Bug fix
-- Thanks for [**goomario**](https://github.com/goomario)'s [report](https://github.com/chuwt/chia-bls-go/issues/7),
+- **2023/07/08** Thanks for [**goomario**](https://github.com/goomario)'s [report](https://github.com/chuwt/chia-bls-go/issues/7),
 a bug was fixed!
   - This bug was caused by the wrong use of `big.Int.Bytes()`, it should be replaced with `big.Int.FillBytes()`