diff --git a/pred-set.cabal b/pred-set.cabal
--- a/pred-set.cabal
+++ b/pred-set.cabal
@@ -1,5 +1,5 @@
 Name:                   pred-set
-Version:                0.0.0
+Version:                0.0.1
 Author:                 Athan Clark <athan.clark@gmail.com>
 Maintainer:             Athan Clark <athan.clark@gmail.com>
 License:                BSD3
diff --git a/src/Data/PredSet/Mutable.hs b/src/Data/PredSet/Mutable.hs
--- a/src/Data/PredSet/Mutable.hs
+++ b/src/Data/PredSet/Mutable.hs
@@ -1,4 +1,10 @@
-module Data.PredSet.Mutable where
+module Data.PredSet.Mutable
+  ( PredSet
+  , PredKey
+  , new
+  , insert
+  , lookup
+  ) where
 
 import Prelude hiding (lookup)
 import Data.Monoid