diff --git a/Data/Conduit/Filesystem.hs b/Data/Conduit/Filesystem.hs
--- a/Data/Conduit/Filesystem.hs
+++ b/Data/Conduit/Filesystem.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE CPP #-}
+{-# LANGUAGE RankNTypes #-}
 
 -- |
 -- Copyright: 2011 John Millikin
diff --git a/filesystem-conduit.cabal b/filesystem-conduit.cabal
--- a/filesystem-conduit.cabal
+++ b/filesystem-conduit.cabal
@@ -1,5 +1,5 @@
 Name:                filesystem-conduit
-Version:             0.5.0
+Version:             0.5.0.1
 Synopsis:            Use system-filepath data types with conduits.
 Description:         Provides ability to traverse a folder structure efficiently, as well as convenience wrappers for reading from and writing to files.
 License:             BSD3
@@ -37,8 +37,7 @@
     cpp-options:   -DTEST
     build-depends:   conduit
                    , base
-                   , hspec
-                   , HUnit
+                   , hspec == 1.3.*
                    , QuickCheck
                    , bytestring
                    , blaze-builder
diff --git a/test/main.hs b/test/main.hs
--- a/test/main.hs
+++ b/test/main.hs
@@ -1,10 +1,8 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE CPP #-}
-import Test.Hspec.Monadic
+import Test.Hspec
 {-
-import Test.Hspec.HUnit ()
 import Test.Hspec.QuickCheck (prop)
-import Test.HUnit
 
 import qualified Data.Conduit as C
 import qualified Data.Conduit.List as CL