diff --git a/README.md b/README.md
index 7c82019..1651a50 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ The bookkeeping sub-commands are
 - `gita ll`: display the status of all repos
 - `gita ls`: display the names of all repos
 - `gita ls <repo-name>`: display the absolute path of one repo
+- `gita rename <repo-name> <new-name>`: rename a repo
 - `gita -v`: display gita version
 
 Repo paths are saved in `$XDG_CONFIG_HOME/gita/repo_path` (most likely `~/.config/gita/repo_path`).
diff --git a/doc/README_CN.md b/doc/README_CN.md
index 60e0380..6a452f8 100644
--- a/doc/README_CN.md
+++ b/doc/README_CN.md
@@ -48,6 +48,7 @@
 - `gita ll`: 显示所有库的信息
 - `gita ls`: 显示所有库的名字
 - `gita ls <repo-name>`: 显示一个库的绝对路径
+- `gita rename <repo-name> <new-name>`: 重命名一个库
 - `gita -v`: 显示老夫的版本号
 
 库的路径存在`$XDG_CONFIG_HOME/gita/repo_path` (多半是`~/.config/gita/repo_path`)。