diff --git a/hsini.cabal b/hsini.cabal
--- a/hsini.cabal
+++ b/hsini.cabal
@@ -1,5 +1,5 @@
 name          : hsini
-version       : 0.4.0
+version       : 0.4.1
 license       : BSD3
 license-file  : LICENSE
 author        : Magnus Therning
diff --git a/src/Data/Ini/Reader/Internals.hs b/src/Data/Ini/Reader/Internals.hs
--- a/src/Data/Ini/Reader/Internals.hs
+++ b/src/Data/Ini/Reader/Internals.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE FlexibleContexts #-}
 -- |
 -- Module    : Data.Ini.Reader.Internals
 -- Copyright : 2011-2014 Magnus Therning
diff --git a/tst/ReaderI.hs b/tst/ReaderI.hs
--- a/tst/ReaderI.hs
+++ b/tst/ReaderI.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE FlexibleContexts #-}
 {-# OPTIONS_GHC -XTemplateHaskell #-}
 -- Copyright : 2011-2014 Magnus Therning
 -- License   : BSD3