diff --git a/rhythm-game-tutorial.cabal b/rhythm-game-tutorial.cabal
--- a/rhythm-game-tutorial.cabal
+++ b/rhythm-game-tutorial.cabal
@@ -1,5 +1,5 @@
 name:                rhythm-game-tutorial
-version:             0.0
+version:             0.1
 synopsis:            Haskell rhythm game tutorial
 description:
 homepage:            https://github.com/fumieval/rhythm-game-tutorial