diff --git a/cast.cabal b/cast.cabal
--- a/cast.cabal
+++ b/cast.cabal
@@ -1,5 +1,5 @@
 name:                cast
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            Abstact cast pattern 
 description:
             Generelized pattern that allow cast one type for another.
diff --git a/src/Pattern/Cast.hs b/src/Pattern/Cast.hs
--- a/src/Pattern/Cast.hs
+++ b/src/Pattern/Cast.hs
@@ -1,7 +1,9 @@
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE FlexibleInstances #-}
 
-module Pattern.Cast where
+module Pattern.Cast
+  ( Cast (..)
+  ) where
 
 class Cast a b where
   cast :: a -> b