diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,9 +1,31 @@
 Copyright (c) 2009, Jinjing Wang
+
 All rights reserved.
 
-Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
 
-Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
-Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
-Neither the name of the <ORGANIZATION> nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Jinjing Wang nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,10 @@
+2009.10.13
+----------
+
+### Fix
+
+* compatible with lastest mps
+
 2009.8.18
 ---------
 
diff --git a/loli.cabal b/loli.cabal
--- a/loli.cabal
+++ b/loli.cabal
@@ -1,5 +1,5 @@
 Name:                 loli
-Version:              2009.8.18
+Version:              2009.10.13
 Build-type:           Simple
 Synopsis:             A minimum web dev DSL in Haskell
 Description:
@@ -18,7 +18,7 @@
 
 library
   ghc-options: -Wall
-  build-depends: base > 4 && <= 5, data-default, hack >= 2009.7.15, hack-contrib >= 2009.8.18, utf8-string, mps >= 2009.8.18.1, mtl, containers, template, bytestring
+  build-depends: base > 4 && <= 5, data-default, hack >= 2009.7.15, hack-contrib >= 2009.8.18, utf8-string, mps >= 2009.9.18, mtl, containers, template, bytestring
   hs-source-dirs: src/
   exposed-modules:  
                       Network.Loli
diff --git a/src/Network/Loli/Engine.hs b/src/Network/Loli/Engine.hs
--- a/src/Network/Loli/Engine.hs
+++ b/src/Network/Loli/Engine.hs
@@ -6,8 +6,8 @@
 import Control.Monad.State hiding (join)
 import Data.Default
 import Hack
-import Hack.Contrib.Middleware.NotFound
 import Hack.Contrib.Middleware.UserMime
+import Hack.Contrib.Middleware.NotFound
 import Hack.Contrib.Utils hiding (get, put)
 import MPS
 import Network.Loli.Config
@@ -20,8 +20,9 @@
 run_app unit = \env -> runReaderT unit env .flip execStateT def {status = 200}
 
 loli :: Unit -> Application
-loli unit = run unit (not_found empty_app)
+loli unit = run unit not_found_app
   where
+    not_found_app = not_found dummy_app
     run_route x = (x.router) loli_captures run_app (x.route_path)
     
     run :: Unit -> Middleware
diff --git a/src/Network/Loli/Middleware/LoliRouter.hs b/src/Network/Loli/Middleware/LoliRouter.hs
--- a/src/Network/Loli/Middleware/LoliRouter.hs
+++ b/src/Network/Loli/Middleware/LoliRouter.hs
@@ -7,6 +7,7 @@
 import MPS
 import Prelude hiding ((.), (>), (/), (-))
 import Data.ByteString.UTF8 (fromString)
+import qualified Prelude as P
 
 
 type RoutePathT a = (RequestMethod, String, a)
@@ -15,19 +16,12 @@
 
 loli_router :: String -> (a -> Application) -> RoutePathT a -> Middleware
 loli_router prefix runner route_path app = \env ->
-  let path             = env.path_info
-      script           = env.script_name
-      mod_env location = env 
-        { scriptName  = script ++ location
-        , pathInfo    = path.drop (location.length)
-        }
-  in
   if route_path.match_route env.not
     then app env
     else do
       let (_, template, app_state) = route_path
-          (location, params) = parse_params template path .fromJust
-      runner app_state (mod_env location .merge_captured params)
+          (_, params) = parse_params template (env.path_info) .fromJust
+      runner app_state (env .merge_captured params)
   where
     match_route env' (method, template, _) = 
       env'.request_method.is method 
@@ -46,7 +40,7 @@
   let template_tokens = t.split "/"
       url_tokens      = s.split "/"
   in
-  if url_tokens.length < template_tokens.length
+  if url_tokens.length P.< template_tokens.length
     then Nothing
     else 
       let rs = zipWith capture template_tokens url_tokens
diff --git a/src/Test/Test.hs b/src/Test/Test.hs
--- a/src/Test/Test.hs
+++ b/src/Test/Test.hs
@@ -1,6 +1,5 @@
 import Control.Monad.Reader
 import Hack.Contrib.Response
-import Hack.Contrib.Middleware.Lambda
 import Hack.Handler.SimpleServer
 -- import Hack.Handler.Happstack
 import Network.Loli
@@ -19,7 +18,6 @@
 main :: IO ()
 main = run 3000 . loli - do
   
-    middleware lambda
     
     before return
     after return