diff --git a/Test/Chuchu/Parser.hs b/Test/Chuchu/Parser.hs
--- a/Test/Chuchu/Parser.hs
+++ b/Test/Chuchu/Parser.hs
@@ -9,7 +9,14 @@
 -- Portability :  non-portable (TypeSynonymInstances, FlexibleInstances)
 --
 -- This modules provides some utility parsers for creating step rules.
-module Test.Chuchu.Parser (number, int, text, wildcard, email) where
+module Test.Chuchu.Parser
+  ( ChuchuParser
+  , number
+  , int
+  , text
+  , wildcard
+  , email
+  ) where
 
 -- base
 import Control.Applicative hiding ((<|>))
diff --git a/Test/Chuchu/Types.hs b/Test/Chuchu/Types.hs
--- a/Test/Chuchu/Types.hs
+++ b/Test/Chuchu/Types.hs
@@ -13,6 +13,7 @@
 
 -- base
 import Control.Applicative hiding ((<|>))
+import Control.Monad (MonadPlus)
 import Data.String
 
 -- parsec
@@ -23,8 +24,8 @@
 -- | @newtype@ for Parsec's 'Parser' used on this library.  The
 -- main reason for not using 'Parser' directly is to be able to
 -- define the 'IsString' instance.
-newtype ChuchuParser a
-  = ChuchuParser (Parser a) deriving (Functor, Applicative, Monad)
+newtype ChuchuParser a = ChuchuParser (Parser a)
+  deriving (Functor, Applicative, Alternative, Monad, MonadPlus)
 
 instance (a ~ ()) => IsString (ChuchuParser a) where
   fromString s = ChuchuParser (string s >> return ())
diff --git a/chuchu.cabal b/chuchu.cabal
--- a/chuchu.cabal
+++ b/chuchu.cabal
@@ -1,11 +1,11 @@
 name: chuchu
-version: 0.1.3
+version: 0.1.4
 cabal-version: >= 1.8
 build-type: Simple
 license: OtherLicense
 license-file: LICENSE
 copyright: 2012 Marco Túlio Pimenta Gontijo <marcotmarcot@gmail.com>
-author: Marco Túlio Pimenta Gontijo <marcotmarcot@gmail.com>
+author: Marco Túlio Pimenta Gontijo <marcotmarcot@gmail.com>, Felipe Lessa <felipe.lessa@gmail.com>
 maintainer: Marco Túlio Pimenta Gontijo <marcotmarcot@gmail.com>
 stability: experimental
 homepage: http://github.com/marcotmarcot/chuchu