diff --git a/en/dm-manage-source.md b/en/dm-manage-source.md
index 36a024da..c7a4cb76 100644
--- a/en/dm-manage-source.md
+++ b/en/dm-manage-source.md
@@ -33,7 +33,7 @@ help operate-source
 ```
 
 ```
-`create`/`update`/`stop`/`show` upstream MySQL/MariaDB source.
+`create`/`stop`/`show` upstream MySQL/MariaDB source.
 
 Usage:
   dmctl operate-source <operate-type> [config-file ...] [--print-sample-config] [flags]
@@ -50,8 +50,6 @@ Global Flags:
 
 + `create`: Creates one or more upstream database source(s). When creating multiple data sources fails, DM rolls back to the state where the command was not executed.
 
-+ `update`: Updates an upstream database source.
-
 + `stop`: Stops one or more upstream database source(s). When stopping multiple data sources fails, some data sources might be stopped.
 
 + `show`: Shows the added data source and the corresponding DM-worker.
diff --git a/en/dmctl-introduction.md b/en/dmctl-introduction.md
index d5cb58a3..243a7087 100644
--- a/en/dmctl-introduction.md
+++ b/en/dmctl-introduction.md
@@ -49,7 +49,7 @@ Available Commands:
   offline-member  Offlines member which has been closed.
   operate-leader  `evict`/`cancel-evict` the leader.
   operate-schema  `get`/`set`/`remove` the schema for an upstream table.
-  operate-source  `create`/`update`/`stop`/`show` upstream MySQL/MariaDB source.
+  operate-source  `create`/`stop`/`show` upstream MySQL/MariaDB source.
   pause-relay     Pauses DM-worker's relay unit.
   pause-task      Pauses a specified running task.
   purge-relay     Purges relay log files of the DM-worker according to the specified filename.
diff --git a/zh/dm-manage-source.md b/zh/dm-manage-source.md
index fc722379..b7def6ea 100644
--- a/zh/dm-manage-source.md
+++ b/zh/dm-manage-source.md
@@ -33,7 +33,7 @@ help operate-source
 ```
 
 ```
-`create`/`update`/`stop`/`show` upstream MySQL/MariaDB source.
+`create`/`stop`/`show` upstream MySQL/MariaDB source.
 
 Usage:
   dmctl operate-source <operate-type> [config-file ...] [--print-sample-config] [flags]
@@ -50,8 +50,6 @@ Global Flags:
 
 + `create`：创建一个或多个上游的数据库源。创建多个数据源失败时，会尝试回滚到执行命令之前的状态
 
-+ `update`：更新一个上游的数据库源
-
 + `stop`：停止一个或多个上游的数据库源。停止多个数据源失败时，可能有部分数据源已成功停止
 
 + `show`：显示已添加的数据源以及对应的 DM-worker
diff --git a/zh/dmctl-introduction.md b/zh/dmctl-introduction.md
index 5236e1da..3a85551f 100644
--- a/zh/dmctl-introduction.md
+++ b/zh/dmctl-introduction.md
@@ -49,7 +49,7 @@ Available Commands:
   offline-member  Offlines member which has been closed.
   operate-leader  `evict`/`cancel-evict` the leader.
   operate-schema  `get`/`set`/`remove` the schema for an upstream table.
-  operate-source  `create`/`update`/`stop`/`show` upstream MySQL/MariaDB source.
+  operate-source  `create`/`stop`/`show` upstream MySQL/MariaDB source.
   pause-relay     Pauses DM-worker's relay unit.
   pause-task      Pauses a specified running task.
   purge-relay     Purges relay log files of the DM-worker according to the specified filename.