diff --git a/common.go b/common.go
index c03d9a90e5..a1f3646d84 100644
--- a/common.go
+++ b/common.go
@@ -64,6 +64,7 @@ var dockerCommands = []Command{
 	{"tag", "Tag an image into a repository"},
 	{"top", "Display the running processes of a container"},
 	{"unpause", "Unpause all processes within a container"},
+	{"update", "Update resources of one or more containers"},
 	{"version", "Show the Docker version information"},
 	{"volume", "Manage Docker volumes"},
 	{"wait", "Block until a container stops, then print its exit code"},