diff --git a/Text/Markdown.hs b/Text/Markdown.hs
--- a/Text/Markdown.hs
+++ b/Text/Markdown.hs
@@ -1,5 +1,6 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
+{-# LANGUAGE RankNTypes #-}
 module Text.Markdown
     ( -- * Functions
       markdown
diff --git a/Text/Markdown/Block.hs b/Text/Markdown/Block.hs
--- a/Text/Markdown/Block.hs
+++ b/Text/Markdown/Block.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE PatternGuards #-}
 {-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE RankNTypes #-}
 {-# OPTIONS_HADDOCK hide #-}
 module Text.Markdown.Block
     ( Block (..)
diff --git a/markdown.cabal b/markdown.cabal
--- a/markdown.cabal
+++ b/markdown.cabal
@@ -1,5 +1,5 @@
 Name:                markdown
-Version:             0.1.1.1
+Version:             0.1.1.2
 Synopsis:            Convert Markdown to HTML, with XSS protection
 Description:         This library leverages existing high-performance libraries (attoparsec, blaze-html, text, and conduit), and should integrate well with existing codebases.
 Homepage:            https://github.com/snoyberg/markdown