diff --git a/Data/Conduit/Zlib.hs b/Data/Conduit/Zlib.hs
--- a/Data/Conduit/Zlib.hs
+++ b/Data/Conduit/Zlib.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE RankNTypes #-}
 -- | Streaming compression and decompression using conduits.
 --
 -- Parts of this code were taken from zlib-enum and adapted for conduits.
diff --git a/test/main.hs b/test/main.hs
--- a/test/main.hs
+++ b/test/main.hs
@@ -1,7 +1,5 @@
-import Test.Hspec.Monadic
-import Test.Hspec.HUnit ()
+import Test.Hspec
 import Test.Hspec.QuickCheck (prop)
-import Test.HUnit
 
 import qualified Data.Conduit as C
 import qualified Data.Conduit.List as CL
@@ -38,4 +36,4 @@
             let unChunk (C.Chunk x) = [x]
                 unChunk C.Flush = []
             bss <- CL.sourceList bssC C.$$ CL.concatMap unChunk C.=$ CZ.ungzip C.=$ CL.consume
-            L.fromChunks bss @?= content
+            L.fromChunks bss `shouldBe` content
diff --git a/zlib-conduit.cabal b/zlib-conduit.cabal
--- a/zlib-conduit.cabal
+++ b/zlib-conduit.cabal
@@ -1,5 +1,5 @@
 Name:                zlib-conduit
-Version:             0.5.0
+Version:             0.5.0.1
 Synopsis:            Streaming compression/decompression via conduits.
 Description:         Streaming compression/decompression via conduits.
 License:             BSD3
@@ -32,8 +32,7 @@
     cpp-options:   -DTEST
     build-depends:   conduit
                    , base
-                   , hspec
-                   , HUnit
+                   , hspec == 1.3.*
                    , QuickCheck
                    , bytestring
                    , transformers