diff --git a/gio.cabal b/gio.cabal
--- a/gio.cabal
+++ b/gio.cabal
@@ -1,5 +1,5 @@
 Name:           gio
-Version:        0.13.3.0
+Version:        0.13.3.1
 License:        LGPL-2.1
 License-file:   COPYING
 Copyright:      (c) 2001-2010 The Gtk2Hs Team
@@ -11,10 +11,10 @@
 homepage:       http://projects.haskell.org/gtk2hs/
 bug-reports:    https://github.com/gtk2hs/gtk2hs/issues
 Synopsis:       Binding to GIO
-Description:    GIO is striving to provide a modern, easy-to-use VFS API that sits at the right level in the library stack. 
-                The goal is to overcome the shortcomings of GnomeVFS and provide an API that is 
-                so good that developers prefer it over raw POSIX calls. 
-                Among other things that means using GObject. 
+Description:    GIO is striving to provide a modern, easy-to-use VFS API that sits at the right level in the library stack.
+                The goal is to overcome the shortcomings of GnomeVFS and provide an API that is
+                so good that developers prefer it over raw POSIX calls.
+                Among other things that means using GObject.
                 It also means not cloning the POSIX API, but providing higher-level, document-centric interfaces.
 Category:       System
 Tested-With:    GHC == 7.0.4, GHC == 7.2.2, GHC == 7.4.1
@@ -50,11 +50,11 @@
         exposed-modules:
           System.GIO
           System.GIO.Enums
-          System.GIO.Types		  
-          
+          System.GIO.Types
+
           System.GIO.Async.AsyncResult
           System.GIO.Async.Cancellable
-          
+
           System.GIO.File.AppInfo
           System.GIO.File.ContentType
           System.GIO.File.FileAttribute
@@ -64,13 +64,13 @@
           System.GIO.File.FileMonitor
           System.GIO.File.IOError
           System.GIO.File.MountOperation
-          
+
           System.GIO.Icons.Emblem
           System.GIO.Icons.EmblemedIcon
           System.GIO.Icons.FileIcon
           System.GIO.Icons.Icon
           System.GIO.Icons.ThemedIcon
-          
+
           System.GIO.Volumes.Drive
           System.GIO.Volumes.Mount
           System.GIO.Volumes.Volume
@@ -83,7 +83,7 @@
 		
         cpp-options:    -U__BLOCKS__ -Ubool
         if os(darwin)
-          cpp-options: -D__attribute__(A)=
+          cpp-options: -D__attribute__(A)= -D_Nullable= -D_Nonnull=
 
         x-Signals-File:  System/GIO/Signals.chs
         x-Signals-Modname: System.GIO.Signals