diff --git a/src/UrlPath.hs b/src/UrlPath.hs
--- a/src/UrlPath.hs
+++ b/src/UrlPath.hs
@@ -73,6 +73,23 @@
 instance Monad m => Url UrlString (AbsoluteUrlT m) where
   renderUrl = expandAbsolute
 
+instance Url T.Text RelativeUrl where
+  renderUrl x = RelativeUrl $ \_ -> expandRelative $ UrlString x []
+
+instance Url T.Text GroundedUrl where
+  renderUrl x = GroundedUrl $ \_ -> expandGrounded $ UrlString x []
+
+instance Url T.Text AbsoluteUrl where
+  renderUrl x = expandAbsolute $ UrlString x []
+
+instance Monad m => Url T.Text (RelativeUrlT m) where
+  renderUrl x = RelativeUrlT $ \_ -> return $ expandRelative $ UrlString x []
+
+instance Monad m => Url T.Text (GroundedUrlT m) where
+  renderUrl x = GroundedUrlT $ \_ -> return $ expandGrounded $ UrlString x []
+
+instance Monad m => Url T.Text (AbsoluteUrlT m) where
+  renderUrl x = expandAbsolute $ UrlString x []
 
 -- * Example
 --
diff --git a/urlpath.cabal b/urlpath.cabal
--- a/urlpath.cabal
+++ b/urlpath.cabal
@@ -1,5 +1,5 @@
 Name:                   urlpath
-Version:                0.0.3
+Version:                0.0.4
 Author:                 Athan Clark <athan.clark@gmail.com>
 Maintainer:             Athan Clark <athan.clark@gmail.com>
 License:                MIT