diff --git a/cereal-plus.cabal b/cereal-plus.cabal
--- a/cereal-plus.cabal
+++ b/cereal-plus.cabal
@@ -1,7 +1,7 @@
 name:
   cereal-plus
 version:
-  0.2.0
+  0.3.0
 synopsis:
   Extended serialization library on top of "cereal".
 description:
@@ -50,6 +50,7 @@
   other-modules:
     CerealPlus.Prelude
   build-depends:
+    cio,
     cereal == 0.4.*,
     errors,
     time,
diff --git a/src/CerealPlus/Prelude.hs b/src/CerealPlus/Prelude.hs
--- a/src/CerealPlus/Prelude.hs
+++ b/src/CerealPlus/Prelude.hs
@@ -96,6 +96,7 @@
 -- errors
 import Control.Error as Exports
 
+
 import qualified Data.ByteString.Lazy
 import qualified Data.Text.Lazy
 import qualified Data.Vector.Primitive
diff --git a/src/CerealPlus/Serialize.hs b/src/CerealPlus/Serialize.hs
--- a/src/CerealPlus/Serialize.hs
+++ b/src/CerealPlus/Serialize.hs
@@ -20,6 +20,7 @@
 newtype Serialize m a = Serialize (WriterT (PutM' ()) m a)
   deriving (Functor, Applicative, Monad, MonadIO, MonadTrans, MonadPlus, Alternative)
 
+
 newtype PutM' a = PutM' (Cereal.PutM a)
   deriving (Functor, Applicative, Monad)