diff --git a/Yesod/Markdown.hs b/Yesod/Markdown.hs
--- a/Yesod/Markdown.hs
+++ b/Yesod/Markdown.hs
@@ -34,7 +34,7 @@
 import Yesod.Form (ToField(..), areq, aopt)
 import Yesod.Core (RenderMessage, SomeMessage(..))
 import Yesod.Form.Types
-import Yesod.Widget (addHamlet)
+import Yesod.Widget (toWidget)
 import Text.Hamlet (hamlet, Html)
 import Database.Persist (PersistField)
 
@@ -60,9 +60,9 @@
 markdownField :: RenderMessage master FormMessage => Field sub master Markdown
 markdownField = Field
     { fieldParse = blank $ Right . Markdown . unlines . lines' . T.unpack
-    , fieldView  = \theId name theClass val _isReq -> addHamlet
+    , fieldView  = \theId name attrs val _isReq -> toWidget
         [hamlet|
-<textarea id="#{theId}" name="#{name}" :not (null theClass):class="#{T.intercalate " " theClass}">#{either id unMarkdown val}
+<textarea id="#{theId}" name="#{name}" *{attrs}>#{either id unMarkdown val}
 |]
      }
 
diff --git a/yesod-markdown.cabal b/yesod-markdown.cabal
--- a/yesod-markdown.cabal
+++ b/yesod-markdown.cabal
@@ -1,5 +1,5 @@
 name:                yesod-markdown
-version:             0.3.4
+version:             0.4.0
 synopsis:            Tools for using markdown in a yesod application
 description:         A subset of pandoc functionality useful for markdown processing in yesod applications
 homepage:            http://github.com/pbrisbin/yesod-markdown
@@ -20,13 +20,13 @@
                , blaze-html      >= 0.4   && < 0.5
                , xss-sanitize    >= 0.3.1 && < 0.4
                , directory
-               , yesod-core      >= 0.10  && < 0.11
-               , yesod-form      >= 0.4   && < 0.5
-               , hamlet
-               , persistent
+               , yesod-core      >= 1.0   && < 1.1
+               , yesod-form      >= 1.0   && < 1.1
+               , hamlet          >= 1.0   && < 1.1
+               , persistent      >= 0.9   && < 0.10
 
   ghc-options: -Wall
-  
+
 source-repository head
   type:         git
   location:     git://github.com/pbrisbin/yesod-markdown.git