diff --git a/Data/BloomFilter/Mutable.hs b/Data/BloomFilter/Mutable.hs
--- a/Data/BloomFilter/Mutable.hs
+++ b/Data/BloomFilter/Mutable.hs
@@ -1,5 +1,5 @@
 {-# LANGUAGE BangPatterns, CPP, Rank2Types,
-    TypeOperators #-}
+    TypeOperators,FlexibleContexts #-}
 
 -- |
 -- Module: Data.BloomFilter.Mutable
diff --git a/bloomfilter.cabal b/bloomfilter.cabal
--- a/bloomfilter.cabal
+++ b/bloomfilter.cabal
@@ -1,5 +1,5 @@
 name:            bloomfilter
-version:         2.0.0.0
+version:         2.0.1.0
 license:         BSD3
 license-file:    LICENSE
 author:          Bryan O'Sullivan <bos@serpentine.com>