diff --git a/CabalDev.hs b/CabalDev.hs
--- a/CabalDev.hs
+++ b/CabalDev.hs
@@ -7,6 +7,7 @@
 options ghc-mod uses to check the source.  Otherwise just pass it on.
 -}
 
+import Control.Applicative    ((<$>))
 import Data.Maybe             (listToMaybe)
 import System.FilePath.Find
 import System.FilePath.Posix  (splitPath,joinPath,(</>))
@@ -37,9 +38,8 @@
 searchIt path = do
   a <- doesDirectoryExist (mpath path)
   if a then do
-    b <- find always (fileName ~~? "packages*.conf") $ mpath path
-    maybe (searchIt $ init path) (return . Just) $ listToMaybe b
+    listToMaybe <$> find always (fileName ~~? "packages*.conf") (mpath path)
   else
-    return Nothing
+    searchIt $ init path
   where
     mpath a = joinPath a </> "cabal-dev/"
diff --git a/GHCMod.hs b/GHCMod.hs
--- a/GHCMod.hs
+++ b/GHCMod.hs
@@ -25,7 +25,7 @@
 ghcOptHelp = " [-g GHC_opt1 -g GHC_opt2 ...] "
 
 usage :: String
-usage =    "ghc-mod version 1.0.0\n"
+usage =    "ghc-mod version 1.0.1\n"
         ++ "Usage:\n"
         ++ "\t ghc-mod list" ++ ghcOptHelp ++ "[-l]\n"
         ++ "\t ghc-mod lang [-l]\n"
diff --git a/elisp/ghc.el b/elisp/ghc.el
--- a/elisp/ghc.el
+++ b/elisp/ghc.el
@@ -16,7 +16,7 @@
 
 ;;; Code:
 
-(defconst ghc-version "1.0.0")
+(defconst ghc-version "1.0.1")
 
 ;; (eval-when-compile
 ;;  (require 'haskell-mode))
diff --git a/ghc-mod.cabal b/ghc-mod.cabal
--- a/ghc-mod.cabal
+++ b/ghc-mod.cabal
@@ -1,5 +1,5 @@
 Name:                   ghc-mod
-Version:                1.0.0
+Version:                1.0.1
 Author:                 Kazu Yamamoto <kazu@iij.ad.jp>
 Maintainer:             Kazu Yamamoto <kazu@iij.ad.jp>
 License:                BSD3