diff --git a/commands/help.go b/commands/help.go
index 369776967cab59fb35ca451596201f715e2778c2..dbe420fb278c9f08febb02a107530c59f9adf731 100644
--- a/commands/help.go
+++ b/commands/help.go
@@ -174,4 +174,5 @@ These GitHub commands are provided by hub:
    pr             Work with pull requests
    pull-request   Open a pull request on GitHub
    release        List or create releases
+   sync           Fetch git objects from upstream and update branches
 `