diff --git a/Amazon-IAM-API.md b/Amazon-IAM-API.md
index 68f09e1..7e2dfa2 100644
--- a/Amazon-IAM-API.md
+++ b/Amazon-IAM-API.md
@@ -12,6 +12,7 @@ To be compatible with Amazon IAM API, a separate "weed iam" command is provided.
 * CreateUser
 * ListUsers
 * GetUser
+* UpdateUser
 * DeleteUser
 * CreatePolicy
 * PutUserPolicy