diff --git a/collects/scribblings/main/license.scrbl b/collects/scribblings/main/license.scrbl
index 571afd23f4..f44d5059ef 100644
--- a/collects/scribblings/main/license.scrbl
+++ b/collects/scribblings/main/license.scrbl
@@ -90,6 +90,12 @@ Racket software includes or extends the following copyrighted material:
   Copyright (c) 2003-2005 Hewlett-Packard Development Company, L.P.
 }
 
+@copyright{
+  PSMTabBarControl
+  John Pannell, Robert Payne, Adam Strzelecki, Dorian Johnson
+  https://github.com/dorianj/PSMTabBarControl
+}
+
 @copyright{
   Clanbomber icon and Stop icons
   Everaldo Coelho