diff --git a/combinator-interactive.cabal b/combinator-interactive.cabal
--- a/combinator-interactive.cabal
+++ b/combinator-interactive.cabal
@@ -2,7 +2,7 @@
 -- further documentation, see http://haskell.org/cabal/users-guide/
 
 name:                combinator-interactive
-version:             0.1
+version:             0.1.1
 synopsis:            SKI Combinator interpreter
 description:         
 homepage:            https://github.com/fumieval/combinator-interactive
diff --git a/main.hs b/main.hs
--- a/main.hs
+++ b/main.hs
@@ -10,7 +10,7 @@
 import qualified Control.Exception as E
 import Data.Void
 import System.IO.Unsafe
-import System.IO.Error
+import System.IO.Error hiding (try)
 import Data.Monoid
 import qualified Data.ByteString.Lazy as BS
 import System.Directory