diff --git a/src/Network/Routing.hs b/src/Network/Routing.hs
--- a/src/Network/Routing.hs
+++ b/src/Network/Routing.hs
@@ -248,7 +248,7 @@
 
 -- | execute router
 execute :: MonadPlus m => Router '[] m a -> Method -> [T.Text] -> m a
-execute = execute' D.empty
+execute = execute' D.emptyStore
 
 execute' :: MonadPlus m => D.Store d -> Router d m a -> Method -> [T.Text] -> m a
 execute' d Router{params, methods, anyMethod} m [] = fetching d m [] params `mplus`
diff --git a/src/Network/Routing/Dict.hs b/src/Network/Routing/Dict.hs
--- a/src/Network/Routing/Dict.hs
+++ b/src/Network/Routing/Dict.hs
@@ -6,12 +6,14 @@
 module Network.Routing.Dict
     ( -- * store
       Store
-    , empty
+    , emptyStore
     , type (</)
     , add
+    , mkDict
 
       -- * dictionary
     , Dict
+    , emptyDict
     , Member
     , get
 
diff --git a/src/Network/Routing/Dict/Internal.hs b/src/Network/Routing/Dict/Internal.hs
--- a/src/Network/Routing/Dict/Internal.hs
+++ b/src/Network/Routing/Dict/Internal.hs
@@ -17,7 +17,8 @@
     ( Dict, Store
     , ShowDict
     , KV(..)
-    , empty
+    , emptyStore
+    , emptyDict
     , type (</)
     , add
     , Member
@@ -51,9 +52,12 @@
         (intercalate ", " . map (\(k, v, t) -> k ++ " = " ++ v ++ " :: " ++ show t) $ showDict 0 (mkDict d))
         ++ "}"
 
-empty :: Store '[]
-empty = Empty
+emptyStore :: Store '[]
+emptyStore = Empty
 
+emptyDict :: Dict '[]
+emptyDict = mkDict Empty
+
 size :: Store kvs -> Int
 size Empty        = 0
 size (Cons l _ _) = l
@@ -78,7 +82,7 @@
 
 -- | O(1) add key value pair to dictionary.
 --
--- >>> let a = add (Proxy :: Proxy "foo") (12 :: Int) empty
+-- >>> let a = add (Proxy :: Proxy "foo") (12 :: Int) emptyStore
 -- >>> a
 -- Store {foo = 12 :: Int}
 --
@@ -130,7 +134,7 @@
 
 -- | O(1) (>= ghc-7.8), O(n) (< ghc-7.8) get key from dictionary
 --
--- >>> let d = mkDict $ add (Proxy :: Proxy "foo") 12 $ add (Proxy :: Proxy "bar") "baz" empty
+-- >>> let d = mkDict $ add (Proxy :: Proxy "foo") 12 $ add (Proxy :: Proxy "bar") "baz" emptyStore
 -- >>> get (Proxy :: Proxy "foo") d
 -- 12
 -- >>> get (Proxy :: Proxy "bar") d
diff --git a/web-routing.cabal b/web-routing.cabal
--- a/web-routing.cabal
+++ b/web-routing.cabal
@@ -1,5 +1,5 @@
 name:                web-routing
-version:             0.3.0
+version:             0.4.0
 synopsis:            simple routing library
 -- description:         
 license:             MIT