diff --git a/gtk2hs-buildtools.cabal b/gtk2hs-buildtools.cabal
--- a/gtk2hs-buildtools.cabal
+++ b/gtk2hs-buildtools.cabal
@@ -1,5 +1,5 @@
 Name:   gtk2hs-buildtools
-Version:        0.13.5.4
+Version:        0.13.8.0
 License:        GPL-2
 License-file:   COPYING
 Copyright:      (c) 2001-2010 The Gtk2Hs Team
@@ -115,7 +115,6 @@
         default-language:   Haskell98
         default-extensions: ForeignFunctionInterface
                             BangPatterns
-                            NoMonadFailDesugaring
 
         if flag(ClosureSignals)
           cpp-options:   -DUSE_GCLOSURE_SIGNALS_IMPL