diff --git a/monad-gen.cabal b/monad-gen.cabal
--- a/monad-gen.cabal
+++ b/monad-gen.cabal
@@ -1,5 +1,5 @@
 name:                monad-gen
-version:             0.2.0.0
+version:             0.2.0.1
 synopsis:            A simple monad for generating fresh integers
 description:
     This module provides a simple monad transformer @GenT@ to enumerate unique values within
diff --git a/src/Control/Monad/Gen.hs b/src/Control/Monad/Gen.hs
--- a/src/Control/Monad/Gen.hs
+++ b/src/Control/Monad/Gen.hs
@@ -4,7 +4,7 @@
 module Control.Monad.Gen
        ( GenT
        , Gen
-       , MonadGen(..)
+       , module Control.Monad.Gen.Class
        , runGenT
        , runGen
        , runGenTWith