diff --git a/plugins/git/hub.zsh b/plugins/git/hub.zsh
index 161fc2a..e2c9280 100644
--- a/plugins/git/hub.zsh
+++ b/plugins/git/hub.zsh
@@ -1,5 +1,6 @@
 #
 # Adds GitHub knowledge to the Git command.
+# https://github.com/defunkt/hub
 #
 # Authors:
 #   Chris Wanstrath <chris@wanstrath.com>