diff --git a/setup.py b/setup.py
index c7a744a991b..f529032a2cd 100644
--- a/setup.py
+++ b/setup.py
@@ -606,6 +606,9 @@ def detect_modules(self):
             		extra_link_args=['-framework', 'Carbon']) )
                 exts.append( Extension('_CarbonEvt', ['carbonevt/_CarbonEvtmodule.c'],
             		extra_link_args=['-framework', 'Carbon']) )
+                exts.append( Extension('_CG', ['cg/_CGmodule.c'],
+            		extra_link_args=['-framework', 'ApplicationServices',
+                                         '-framework', 'Carbon']) )
                 exts.append( Extension('_Cm', ['cm/_Cmmodule.c'],
             		extra_link_args=['-framework', 'Carbon']) )
                 exts.append( Extension('_Ctl', ['ctl/_Ctlmodule.c'],