diff --git a/egison.cabal b/egison.cabal
--- a/egison.cabal
+++ b/egison.cabal
@@ -1,5 +1,5 @@
 Name:                egison
-Version:             2.0.0
+Version:             2.0.1
 Synopsis:            An Interpreter for the Programming Language Egison
 Description:         An interpreter for the programming language Egison.
                      A feature of Egison is the strong pattern match facility.
diff --git a/hs-src/Language/Egison/Core.hs b/hs-src/Language/Egison/Core.hs
--- a/hs-src/Language/Egison/Core.hs
+++ b/hs-src/Language/Egison/Core.hs
@@ -14,13 +14,13 @@
 import Paths_egison
 
 -- |egison version number
-version :: String
-version = "2.0.0"
+egisonVersion :: String
+egisonVersion = "2.0.0"
 
 -- |A utility function to display the egison console banner
 showBanner :: IO ()
 showBanner = do
-  putStrLn $ "Egison Version " ++ version ++ " (c) 2011-2012 Satoshi Egi"
+  putStrLn $ "Egison Version " ++ egisonVersion ++ " (c) 2011-2012 Satoshi Egi"
   putStrLn $ "http://hagi.is.s.u-tokyo.ac.jp/~egi/egison/"
   putStrLn $ "Welcome to Egison Interpreter!"