diff --git a/app/Main.hs b/app/Main.hs
deleted file mode 100644
--- a/app/Main.hs
+++ /dev/null
@@ -1,6 +0,0 @@
-module Main (main) where
-
-import Lib
-
-main :: IO ()
-main = someFunc
diff --git a/gpu-vulkan-middle-khr-surface-glfw.cabal b/gpu-vulkan-middle-khr-surface-glfw.cabal
--- a/gpu-vulkan-middle-khr-surface-glfw.cabal
+++ b/gpu-vulkan-middle-khr-surface-glfw.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           gpu-vulkan-middle-khr-surface-glfw
-version:        0.1.0.0
+version:        0.1.0.1
 synopsis:       medium wrapper for GLFW surface for the Vulkan API
 description:    Please see the README on GitHub at <https://github.com/YoshikuniJujo/gpu-vulkan-middle-khr-surface-glfw#readme>
 category:       GPU
@@ -28,7 +28,6 @@
 library
   exposed-modules:
       Gpu.Vulkan.Khr.Surface.Glfw.Middle
-      Lib
   other-modules:
       Paths_gpu_vulkan_middle_khr_surface_glfw
   autogen-modules:
@@ -41,24 +40,6 @@
     , base >=4.7 && <5
     , gpu-vulkan-middle <1
     , gpu-vulkan-middle-khr-surface <1
-    , typelevel-tools-yj <1
-  default-language: Haskell2010
-
-executable gpu-vulkan-middle-khr-surface-glfw-exe
-  main-is: Main.hs
-  other-modules:
-      Paths_gpu_vulkan_middle_khr_surface_glfw
-  autogen-modules:
-      Paths_gpu_vulkan_middle_khr_surface_glfw
-  hs-source-dirs:
-      app
-  ghc-options: -Wall -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints -threaded -rtsopts -with-rtsopts=-N
-  build-depends:
-      GLFW-b <4
-    , base >=4.7 && <5
-    , gpu-vulkan-middle <1
-    , gpu-vulkan-middle-khr-surface <1
-    , gpu-vulkan-middle-khr-surface-glfw
     , typelevel-tools-yj <1
   default-language: Haskell2010
 
diff --git a/src/Lib.hs b/src/Lib.hs
deleted file mode 100644
--- a/src/Lib.hs
+++ /dev/null
@@ -1,6 +0,0 @@
-module Lib
-    ( someFunc
-    ) where
-
-someFunc :: IO ()
-someFunc = putStrLn "someFunc"