diff --git a/app/Main.hs b/app/Main.hs
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -5,6 +5,8 @@
 import qualified Beautifier             as B
 import qualified Data.Text.Lazy         as T
 import qualified Data.Text.Lazy.IO      as TextIO
+import           Data.Version           (showVersion)
+import           Paths_bunz             (version)
 import           System.Console.CmdArgs ((&=))
 import qualified System.Console.CmdArgs as CA
 import           System.Posix.IO        (stdInput)
@@ -15,7 +17,7 @@
 
 
 args = Args { jsonString = CA.def &= CA.typ "JSON String" &= CA.argPos 0 }
-    &= CA.summary "JSON beautifier tool version 0.0.1"
+    &= CA.summary ("JSON beautifier tool version " ++ showVersion version)
 
 main :: IO ()
 main = queryTerminal stdInput >>= run
diff --git a/bunz.cabal b/bunz.cabal
--- a/bunz.cabal
+++ b/bunz.cabal
@@ -1,5 +1,5 @@
 name:                bunz
-version:             0.0.3
+version:             0.0.4
 synopsis:            CLI tool to beautify JSON string.
 description:         CLI tool to beautify JSON string.
 homepage:            https://github.com/sendyhalim/bunz