diff --git a/Data/Aeson/Lens.hs b/Data/Aeson/Lens.hs
--- a/Data/Aeson/Lens.hs
+++ b/Data/Aeson/Lens.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE FlexibleContexts  #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE ViewPatterns      #-}
+{-# LANGUAGE RankNTypes        #-}
 
 module Data.Aeson.Lens (
   ValueIx(..),
diff --git a/aeson-lens.cabal b/aeson-lens.cabal
--- a/aeson-lens.cabal
+++ b/aeson-lens.cabal
@@ -1,5 +1,5 @@
 name:                aeson-lens
-version:             0.1.0.1
+version:             0.1.0.2
 synopsis:            Lens of Aeson
 description:         Lens of Aeson
 license:             BSD3