diff --git a/web-routes.cabal b/web-routes.cabal
--- a/web-routes.cabal
+++ b/web-routes.cabal
@@ -1,5 +1,5 @@
 Name:             web-routes
-Version:          0.27.5
+Version:          0.27.6
 License:          BSD3
 License-File:     LICENSE
 Author:           jeremy@seereason.com
@@ -30,7 +30,7 @@
                           parsec        >= 2 && <4,
                           bytestring    >= 0.9 && < 0.11,
                           http-types    >= 0.6,
-                          mtl           >= 2.0 && < 2.2,
+                          mtl           >= 2.0 && < 2.3,
                           text          >= 0.11 && < 1.2,
                           utf8-string   >= 0.3 && < 0.4
         if impl(ghc >= 7.2)