diff --git a/System/Directory/Tree.hs b/System/Directory/Tree.hs
--- a/System/Directory/Tree.hs
+++ b/System/Directory/Tree.hs
@@ -67,7 +67,7 @@
 import System.Directory
 import System.FilePath
 import System.IO
-import Control.Exception (handle, Exception)
+import Control.Exception (handle, IOException)
 
 import Data.Function (on)
 import Data.List (sort, (\\))
@@ -89,7 +89,7 @@
                | File { name :: FileName,
                         file :: a }
                | Failed { name :: FileName,
-                          err  :: Exception }
+                          err  :: IOException }
                  deriving (Show, Eq)
 
 
@@ -222,7 +222,7 @@
 
 
 -- | maps a function to convert Failed DirTrees to Files or Dirs
-failedMap :: (FileName -> Exception -> DirTree a) -> DirTree a -> DirTree a
+failedMap :: (FileName -> IOException -> DirTree a) -> DirTree a -> DirTree a
 failedMap f (Dir n cs)   = Dir n $map (failedMap f) cs
 failedMap f (Failed n e) = f n e
 failedMap _ fle          = fle
diff --git a/directory-tree.cabal b/directory-tree.cabal
--- a/directory-tree.cabal
+++ b/directory-tree.cabal
@@ -1,5 +1,5 @@
 name:            directory-tree
-version:         0.1.2
+version:         0.2.0
 homepage:        http://coder.bsimmons.name/blog/2009/05/directory-tree-module-released/
 synopsis:        A simple directory-like tree datatype, with useful IO functions 
 description:     A simple directory-like tree datatype, with useful IO functions and Foldable and Traversable instance  
@@ -45,16 +45,16 @@
 category:        Data, System
 license:         BSD3
 license-file:    LICENSE
-copyright:       (c) 2009, Brandon Simmons <brandon.m.simmons@gmail.com>
+copyright:       (c) 2010, Brandon Simmons <brandon.m.simmons@gmail.com>
 author:          Brandon Simmons
 maintainer:      Brandon Simmons <brandon.m.simmons@gmail.com>
 cabal-version:   >= 1.2.0
 build-type:      Simple
-tested-with:     GHC ==6.8.2
+tested-with:     GHC <=6.12.1
 extra-source-files: examples.hs
 
 
 library
     exposed-modules: System.Directory.Tree
-    build-depends: base <4, filepath, directory
+    build-depends: base <5, filepath <2, directory <2
     ghc-options:       -Wall