diff --git a/reform-happstack.cabal b/reform-happstack.cabal
--- a/reform-happstack.cabal
+++ b/reform-happstack.cabal
@@ -1,5 +1,5 @@
 Name:                reform-happstack
-Version:             0.2.2
+Version:             0.2.3
 Synopsis:            Happstack support for reform.
 Description:         Reform is a library for building and validating forms using applicative functors. This package add support for using reform with Happstack.
 Homepage:            http://www.happstack.com/
@@ -22,7 +22,7 @@
   Build-depends:       base >4 && <5,
                        bytestring       >= 0.9 && < 0.11,
                        happstack-server >= 7.0 && < 7.4,
-                       mtl              >= 2.0 && <2.2,
+                       mtl              >= 2.0 && < 2.3,
                        random           == 1.0.*,
                        reform           == 0.2.*,
                        text             >= 0.11 && < 1.2,