diff --git a/Codec/Zlib/Enum.hs b/Codec/Zlib/Enum.hs
index 6c896f4..0fe17e1 100644
--- a/Codec/Zlib/Enum.hs
+++ b/Codec/Zlib/Enum.hs
@@ -8,7 +8,8 @@ module Codec.Zlib.Enum (
 import Codec.Zlib
 import Data.Enumerator as E
 import qualified Data.Enumerator.List as EL
-import Control.Monad.Trans (MonadIO, liftIO, lift)
+import Control.Monad.Trans.Class (lift)
+import Control.Monad.IO.Class (MonadIO, liftIO)
 import Data.ByteString (ByteString)
 
 -- | Gzip compression with default parameters.
diff --git a/test.hs b/test.hs
index 95d41e9..01c7c66 100644
--- a/test.hs
+++ b/test.hs
@@ -34,7 +34,7 @@ import qualified Data.Enumerator.List as EL
 import qualified Data.Enumerator.Binary as EB
 
 import Control.Monad (foldM)
-import Control.Monad.Trans (MonadIO (..))
+import Control.Monad.IO.Class (MonadIO (..))
 import Control.Exception (bracket)
 
 import Codec.Zlib
diff --git a/zlib-enum.cabal b/zlib-enum.cabal
index 0867ed6..7471d79 100644
--- a/zlib-enum.cabal
+++ b/zlib-enum.cabal
@@ -2,7 +2,7 @@ name:           zlib-enum
 version:        0.1
 license:        MIT
 license-file:   LICENSE
-author:         Malte Sommerkorn <malte.sommerkorn@googlemail.com>
+author:         Paulo Tanimoto <ptanimoto@gmail.com>
 maintainer:     Malte Sommerkorn <malte.sommerkorn@googlemail.com>
 synopsis:       Enumerator interface for zlib compression
 description:    zlib-enum is a stop-gap package to provide enumeratees for
@@ -24,7 +24,7 @@ library
          Buildable: False
     build-depends: base                  >= 4 && < 5
                  , bytestring
-                 , mtl                   >= 2
+                 , transformers          == 0.2.*
                  , enumerator            >= 0.4
                  , zlib-bindings
     exposed-modules: Codec.Zlib.Enum
@@ -38,7 +38,7 @@ executable zlib-enum-test
         build-depends:
               base                       >= 4.0   &&   < 5.0
             , bytestring                 >= 0.9   &&   < 0.10
-            , mtl                        >= 2.0   &&   < 2.1
+            , transformers               == 0.2.*
             , enumerator                 >= 0.4   &&   < 0.5
             , zlib-bindings              >= 0.0   &&   < 0.1
             , process                    >= 1.0   &&   < 1.1