diff --git a/setup.py b/setup.py
index 38b24e7..d716589 100644
--- a/setup.py
+++ b/setup.py
@@ -1402,6 +1402,17 @@
             addMacExtension('_CF', core_kwds, ['cf/pycfbridge.c'])
             addMacExtension('autoGIL', core_kwds)
 
+            # _scproxy
+            sc_kwds = {
+                'extra_compile_args': carbon_extra_compile_args,
+                'extra_link_args': [
+                    '-framework', 'SystemConfiguration',
+                    '-framework', 'CoreFoundation'
+                ],
+            }
+            addMacExtension("_scproxy", sc_kwds)
+
+
             # Carbon
             carbon_kwds = {'extra_compile_args': carbon_extra_compile_args,
                            'extra_link_args': ['-framework', 'Carbon'],