diff --git a/Setup.hs b/Setup.hs
--- a/Setup.hs
+++ b/Setup.hs
@@ -1,2 +1,3 @@
 import Distribution.Simple
+
 main = defaultMain
diff --git a/src/Data/Validity/ByteString.hs b/src/Data/Validity/ByteString.hs
--- a/src/Data/Validity/ByteString.hs
+++ b/src/Data/Validity/ByteString.hs
@@ -1,10 +1,11 @@
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+
 module Data.Validity.ByteString where
 
-import           Data.Validity
+import Data.Validity
 
-import           Data.ByteString
+import Data.ByteString
 
 -- | A 'ByteString' is trivially valid.
 instance Validity ByteString where
     isValid = const True
-
diff --git a/validity-bytestring.cabal b/validity-bytestring.cabal
--- a/validity-bytestring.cabal
+++ b/validity-bytestring.cabal
@@ -1,25 +1,28 @@
-name:                validity-bytestring
-version:             0.1.0.0
-synopsis:            Validity instances for bytestring
-description:         Please see README.md
-homepage:            https://github.com/NorfairKing/validity#readme
-license:             MIT
-license-file:        LICENSE
-author:              Tom Sydney Kerckhove
-maintainer:          syd.kerckhove@gmail.com
-copyright:           Copyright: (c) 2016 Tom Sydney Kerckhove
-category:            Validity
-build-type:          Simple
-cabal-version:       >=1.10
-
-library
-  hs-source-dirs:      src
-  exposed-modules:     Data.Validity.ByteString
-  build-depends:       base < 5
-                     , validity
-                     , bytestring
-  default-language:    Haskell2010
+name: validity-bytestring
+version: 0.1.0.1
+cabal-version: >=1.10
+build-type: Simple
+license: MIT
+license-file: LICENSE
+copyright: Copyright: (c) 2016 Tom Sydney Kerckhove
+maintainer: syd.kerckhove@gmail.com
+homepage: https://github.com/NorfairKing/validity#readme
+synopsis: Validity instances for bytestring
+description:
+    Please see README.md
+category: Validity
+author: Tom Sydney Kerckhove
 
 source-repository head
-  type:     git
-  location: https://github.com/NorfairKing/validity
+    type: git
+    location: https://github.com/NorfairKing/validity
+
+library
+    exposed-modules:
+        Data.Validity.ByteString
+    build-depends:
+        base >= 4.7 && <5,
+        validity -any,
+        bytestring -any
+    default-language: Haskell2010
+    hs-source-dirs: src