diff --git a/mysql-effect.cabal b/mysql-effect.cabal
--- a/mysql-effect.cabal
+++ b/mysql-effect.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                mysql-effect
-version:             0.2.0.2
+version:             0.2.0.3
 synopsis:            An extensible mysql effect using extensible-effects and mysql-simple
 description:         Any help (especially documentation) is very welcome,
 homepage:            https://github.com/ibotty/mysql-effect
diff --git a/src/Control/Eff/MySQL.hs b/src/Control/Eff/MySQL.hs
--- a/src/Control/Eff/MySQL.hs
+++ b/src/Control/Eff/MySQL.hs
@@ -5,7 +5,8 @@
 -- See the documentation of 'mysql-simple' for details regarding the
 -- various functions.
 module Control.Eff.MySQL
-  ( query
+  ( MySQL
+  , query
   , query_
   -- , fold
   -- , fold_