diff --git a/Yesod/Form/Profiles.hs b/Yesod/Form/Profiles.hs
--- a/Yesod/Form/Profiles.hs
+++ b/Yesod/Form/Profiles.hs
@@ -26,8 +26,8 @@
 import Database.Persist (PersistField)
 import Text.HTML.SanitizeXSS (sanitizeBalance)
 
-import Text.Blaze.Builder.Utf8 (writeChar)
-import Text.Blaze.Builder.Core (writeList, writeByteString)
+import Blaze.ByteString.Builder.Char.Utf8 (writeChar)
+import Blaze.ByteString.Builder (fromWrite4List, writeByteString)
 
 import Yesod.Internal (lbsToChars)
 
@@ -87,7 +87,7 @@
     deriving (Show, Read, Eq, PersistField)
 instance ToHtml Textarea where
     toHtml =
-        Html . writeList writeHtmlEscapedChar . unTextarea
+        Html . fromWrite4List writeHtmlEscapedChar . unTextarea
       where
         -- Taken from blaze-builder and modified with newline handling.
         writeHtmlEscapedChar '<'  = writeByteString "&lt;"
diff --git a/Yesod/Json.hs b/Yesod/Json.hs
--- a/Yesod/Json.hs
+++ b/Yesod/Json.hs
@@ -23,8 +23,8 @@
 import Yesod.Handler (GHandler)
 import Numeric (showHex)
 import Data.Monoid (Monoid (..))
-import Text.Blaze.Builder.Core
-import Text.Blaze.Builder.Utf8 (writeChar)
+import Blaze.ByteString.Builder
+import Blaze.ByteString.Builder.Char.Utf8 (writeChar)
 
 #if TEST
 import Test.Framework (testGroup, Test)
@@ -63,7 +63,7 @@
 jsonScalar :: String -> Json
 jsonScalar s = Json $ mconcat
     [ fromByteString "\""
-    , writeList writeJsonChar s
+    , fromWrite4List writeJsonChar s
     , fromByteString "\""
     ]
   where
diff --git a/yesod.cabal b/yesod.cabal
--- a/yesod.cabal
+++ b/yesod.cabal
@@ -1,5 +1,5 @@
 name:            yesod
-version:         0.6.1
+version:         0.6.1.1
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -31,7 +31,7 @@
                    , template-haskell          >= 2.4      && < 2.6
                    , web-routes-quasi          >= 0.6      && < 0.7
                    , hamlet                    >= 0.5.1    && < 0.7
-                   , blaze-builder             >= 0.1      && < 0.2
+                   , blaze-builder             >= 0.2      && < 0.3
                    , transformers              >= 0.2      && < 0.3
                    , clientsession             >= 0.4.0    && < 0.5
                    , pureMD5                   >= 1.1.0.0  && < 2.2