diff --git a/machines-io.cabal b/machines-io.cabal
--- a/machines-io.cabal
+++ b/machines-io.cabal
@@ -1,5 +1,5 @@
 name:                machines-io
-version:             0.2.0.4
+version:             0.2.0.6
 synopsis:            IO utilities for the machines library
 homepage:            http://github.com/aloiscochard/machines-io
 license:             Apache-2.0
diff --git a/src/System/IO/Machine.hs b/src/System/IO/Machine.hs
--- a/src/System/IO/Machine.hs
+++ b/src/System/IO/Machine.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE Rank2Types #-}
 module System.IO.Machine where
 
+import Control.Applicative ((<$>))
 import Control.Monad.IO.Class (MonadIO, liftIO)
 import Data.IOData (IOData, hGetLine, hPutStrLn)
 import Data.Machine