diff --git a/async.cabal b/async.cabal
--- a/async.cabal
+++ b/async.cabal
@@ -1,5 +1,5 @@
 Name:                   async
-Version:                1.3
+Version:                1.4
 Copyright:              (c) 2004-2011 Peter Simons
 License:                BSD3
 License-File:           LICENSE
@@ -10,7 +10,7 @@
 Synopsis:               Asynchronous Computations
 Cabal-Version:          >= 1.6
 Build-Type:             Simple
-Tested-With:            GHC == 6.12.3, GHC == 7.0.4, GHC == 7.2.1
+Tested-With:            GHC == 7.0.4, GHC == 7.2.1
 Description:
   An implementation of IO computations that return their value
   asynchronously.
@@ -20,6 +20,6 @@
   Location:             git://gitorious.org/async/mainline.git
 
 Library
-  Build-Depends:        base >= 3 && < 5
+  Build-Depends:        base >= 4.3 && < 5
   Exposed-Modules:      Control.Async
   Ghc-Options:          -Wall