diff --git a/Yesod/Form/Fields.hs b/Yesod/Form/Fields.hs
--- a/Yesod/Form/Fields.hs
+++ b/Yesod/Form/Fields.hs
@@ -3,6 +3,7 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE CPP #-}
 module Yesod.Form.Fields
     ( -- * i18n
       FormMessage (..)
@@ -50,7 +51,14 @@
 import Yesod.Widget (toWidget, whamlet, GWidget)
 import Yesod.Message (RenderMessage (renderMessage), SomeMessage (..))
 import Text.Hamlet
+#if MIN_VERSION_blaze_html(0, 5, 0)
+import Text.Blaze (ToMarkup (toMarkup), preEscapedToMarkup, unsafeByteString)
+#define ToHtml ToMarkup
+#define toHtml toMarkup
+#define preEscapedText preEscapedToMarkup
+#else
 import Text.Blaze (ToHtml (..), preEscapedText, unsafeByteString)
+#endif
 import Text.Cassius
 import Data.Time (Day, TimeOfDay(..))
 import qualified Text.Email.Validate as Email
diff --git a/Yesod/Form/Functions.hs b/Yesod/Form/Functions.hs
--- a/Yesod/Form/Functions.hs
+++ b/Yesod/Form/Functions.hs
@@ -2,6 +2,7 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE RecordWildCards #-}
 {-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE CPP #-}
 module Yesod.Form.Functions
     ( -- * Running in MForm monad
       newFormIdent
@@ -43,7 +44,13 @@
 import Control.Monad.Trans.RWS (ask, get, put, runRWST, tell, evalRWST)
 import Control.Monad.Trans.Class (lift)
 import Control.Monad (liftM, join)
+#if MIN_VERSION_blaze_html(0, 5, 0)
+import Text.Blaze (Markup, toMarkup)
+#define Html Markup
+#define toHtml toMarkup
+#else
 import Text.Blaze (Html, toHtml)
+#endif
 import Yesod.Handler (GHandler, getRequest, runRequestBody, newIdent, getYesod)
 import Yesod.Core (RenderMessage, SomeMessage (..))
 import Yesod.Widget (GWidget, whamlet)
diff --git a/Yesod/Form/MassInput.hs b/Yesod/Form/MassInput.hs
--- a/Yesod/Form/MassInput.hs
+++ b/Yesod/Form/MassInput.hs
@@ -2,6 +2,7 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE FlexibleContexts #-}
+{-# LANGUAGE CPP#-}
 module Yesod.Form.MassInput
     ( inputList
     , massDivs
@@ -14,7 +15,11 @@
 import Yesod.Widget (GWidget, whamlet)
 import Yesod.Message (RenderMessage)
 import Yesod.Handler (newIdent, GHandler)
+#if MIN_VERSION_blaze_html(0, 5, 0)
+import Text.Blaze.Html (Html)
+#else
 import Text.Blaze (Html)
+#endif
 import Control.Monad.Trans.Class (lift)
 import Control.Monad.Trans.RWS (get, put, ask)
 import Data.Maybe (fromMaybe)
diff --git a/Yesod/Form/Nic.hs b/Yesod/Form/Nic.hs
--- a/Yesod/Form/Nic.hs
+++ b/Yesod/Form/Nic.hs
@@ -3,6 +3,7 @@
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE NoMonomorphismRestriction #-} -- FIXME remove
+{-# LANGUAGE CPP #-}
 -- | Provide the user with a rich text editor.
 module Yesod.Form.Nic
     ( YesodNic (..)
@@ -16,8 +17,14 @@
 import Text.HTML.SanitizeXSS (sanitizeBalance)
 import Text.Hamlet (Html, shamlet)
 import Text.Julius (julius)
-import Text.Blaze.Renderer.String (renderHtml)
+#if MIN_VERSION_blaze_html(0, 5, 0)
+import Text.Blaze (preEscapedToMarkup)
+import Text.Blaze.Html.Renderer.String (renderHtml)
+#define preEscapedText preEscapedToMarkup
+#else
 import Text.Blaze (preEscapedText)
+import Text.Blaze.Renderer.String (renderHtml)
+#endif
 import Data.Text (Text, pack)
 import Data.Maybe (listToMaybe)
 
diff --git a/Yesod/Form/Types.hs b/Yesod/Form/Types.hs
--- a/Yesod/Form/Types.hs
+++ b/Yesod/Form/Types.hs
@@ -1,6 +1,7 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE TypeFamilies #-}
 {-# LANGUAGE ExistentialQuantification #-}
+{-# LANGUAGE CPP #-}
 module Yesod.Form.Types
     ( -- * Helpers
       Enctype (..)
@@ -22,7 +23,14 @@
 import Yesod.Request (FileInfo)
 import Data.Text (Text)
 import Data.Monoid (Monoid (..))
+#if MIN_VERSION_blaze_html(0, 5, 0)
+import Text.Blaze (Markup, ToMarkup (toMarkup))
+#define Html Markup
+#define ToHtml ToMarkup
+#define toHtml toMarkup
+#else
 import Text.Blaze (Html, ToHtml (toHtml))
+#endif
 import Control.Applicative ((<$>), Applicative (..))
 import Control.Monad (liftM)
 import Data.String (IsString (..))
diff --git a/yesod-form.cabal b/yesod-form.cabal
--- a/yesod-form.cabal
+++ b/yesod-form.cabal
@@ -1,5 +1,5 @@
 name:            yesod-form
-version:         1.0.0.2
+version:         1.0.0.3
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -12,6 +12,10 @@
 homepage:        http://www.yesodweb.com/
 description:     Form handling support for Yesod Web Framework
 
+flag blaze_html_0_5
+    description: use blaze-html 0.5 and blaze-markup 0.5
+    default: False
+
 library
     build-depends:   base                  >= 4        && < 5
                    , yesod-core            >= 1.0      && < 1.1
@@ -28,11 +32,19 @@
                    , blaze-builder         >= 0.2.1.4  && < 0.4
                    , network               >= 2.2      && < 2.4
                    , email-validate        >= 0.2.6    && < 0.3
-                   , blaze-html            >= 0.4.1.3  && < 0.5
                    , bytestring            >= 0.9.1.4  && < 0.10
                    , text                  >= 0.9      && < 1.0
                    , wai                   >= 1.2      && < 1.3
                    , containers            >= 0.2      && < 0.5
+
+    if flag(blaze_html_0_5)
+        build-depends:
+                     blaze-html               >= 0.5     && < 0.6
+                   , blaze-markup             >= 0.5.1   && < 0.6
+    else
+        build-depends:
+                     blaze-html               >= 0.4     && < 0.5
+
     exposed-modules: Yesod.Form
                      Yesod.Form.Class
                      Yesod.Form.Types