diff --git a/README-EN.md b/README-EN.md
index 35d0690..42a10be 100644
--- a/README-EN.md
+++ b/README-EN.md
@@ -4,7 +4,7 @@
 
 
 <div align="center">
-    <img src='https://shields.io/badge/version-2.2.3-green.svg'>
+    <img src='https://shields.io/badge/version-2.2.5-green.svg'>
     <img src='https://shields.io/badge/author-Chang Zhang-dbab09.svg'>
     <img src='https://shields.io/badge/dependencies-Spring|aspectjweaver|tomcat|UIKit-r.svg'>
     <h4>A springboot tool for tracking the paths of methods,which can help you to find methods's performances easily.</h4>
diff --git a/README.md b/README.md
index 539cb0d..327cd1c 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 </div>
 
 <div align="center">
-    <img src='https://shields.io/badge/version-2.2.3-green.svg'>
+    <img src='https://shields.io/badge/version-2.2.5-green.svg'>
     <img src='https://shields.io/badge/author-Chang Zhang-dbab09.svg'>
     <img src='https://shields.io/badge/dependencies-Spring|aspectjweaver|tomcat|UIKit-r.svg'>
     <h4>koTime是一个springboot项目性能分析工具，通过追踪方法调用链路以及对应的运行时长快速定位性能瓶颈</h4>
@@ -98,6 +98,9 @@
 
 > V2.2.3：添加redis存储支持
 
+> V2.2.5：添加ko-time.discard-rate配置，允许丢弃一部分数据提高性能；
+            修复数据库查询超时的bug
+
 ## 特别说明
 
 1.本项目使用java8开发，其他版本未曾试验，如有什么bug还请告知！
diff --git a/docs/v220/en/getstart.md b/docs/v220/en/getstart.md
index 8b4e8e4..ac7c7bf 100644
--- a/docs/v220/en/getstart.md
+++ b/docs/v220/en/getstart.md
@@ -7,7 +7,7 @@ add a dependency in pom.xml.
  <dependency>
     <groupId>cn.langpy</groupId>
     <artifactId>ko-time</artifactId>
-    <version>2.2.5</version>
+    <version>2.2.5-PRE</version>
   </dependency>
 ```
 
diff --git a/docs/v220/getstart.md b/docs/v220/getstart.md
index 21d8d99..828d075 100644
--- a/docs/v220/getstart.md
+++ b/docs/v220/getstart.md
@@ -7,7 +7,7 @@
  <dependency>
     <groupId>cn.langpy</groupId>
     <artifactId>ko-time</artifactId>
-    <version>2.2.5</version>
+    <version>2.2.5-PRE</version>
   </dependency>
 ```