diff --git a/README.cn.md b/README.cn.md
index 9a953b5e..d9a9e635 100644
--- a/README.cn.md
+++ b/README.cn.md
@@ -1556,6 +1556,7 @@ COPY ./zoneinfo.zip /usr/local/go/lib/time/zoneinfo.zip
 #### 参考项目
 
 * [briannesbitt/carbon](https://github.com/briannesbitt/Carbon)
+* [nodatime/nodatime](https://github.com/nodatime/nodatime)
 * [jinzhu/now](https://github.com/jinzhu/now)
 * [goframe/gtime](https://github.com/gogf/gf/tree/master/os/gtime)
 * [jodaOrg/joda-time](https://github.com/jodaOrg/joda-time)
diff --git a/README.jp.md b/README.jp.md
index 23b93b6f..fe5c74e9 100644
--- a/README.jp.md
+++ b/README.jp.md
@@ -1538,6 +1538,7 @@ invalid timezone "xxx", please see the file "$GOROOT/lib/time/zoneinfo.zip" for
 #### 参考
 
 * [briannesbitt/carbon](https://github.com/briannesbitt/Carbon)
+* [nodatime/nodatime](https://github.com/nodatime/nodatime)
 * [jinzhu/now](https://github.com/jinzhu/now)
 * [goframe/gtime](https://github.com/gogf/gf/tree/master/os/gtime)
 * [jodaOrg/joda-time](https://github.com/jodaOrg/joda-time)
diff --git a/README.md b/README.md
index 8d31c7a4..33efe7ae 100644
--- a/README.md
+++ b/README.md
@@ -1536,6 +1536,7 @@ invalid timezone "xxx", please see the file "$GOROOT/lib/time/zoneinfo.zip" for
 #### References
 
 * [briannesbitt/carbon](https://github.com/briannesbitt/Carbon)
+* [nodatime/nodatime](https://github.com/nodatime/nodatime)
 * [jinzhu/now](https://github.com/jinzhu/now)
 * [goframe/gtime](https://github.com/gogf/gf/tree/master/os/gtime)
 * [jodaOrg/joda-time](https://github.com/jodaOrg/joda-time)