diff --git a/yesod-form/Yesod/Form/Fields.hs b/yesod-form/Yesod/Form/Fields.hs
index b8109dfb..0689859f 100644
--- a/yesod-form/Yesod/Form/Fields.hs
+++ b/yesod-form/Yesod/Form/Fields.hs
@@ -64,8 +64,8 @@ import qualified Text.Email.Validate as Email
 import Data.Text.Encoding (encodeUtf8, decodeUtf8With)
 import Data.Text.Encoding.Error (lenientDecode)
 import Network.URI (parseURI)
-import Database.Persist.Sql (PersistField, PersistFieldSql)
-import Database.Persist (Entity (..))
+import Database.Persist.Sql (PersistField, PersistFieldSql (..))
+import Database.Persist (Entity (..), SqlType (SqlString))
 import Text.HTML.SanitizeXSS (sanitizeBalance)
 import Control.Monad (when, unless)
 import Data.Maybe (listToMaybe, fromMaybe)
@@ -168,7 +168,9 @@ $newline never
 -- | A newtype wrapper around a 'Text' that converts newlines to HTML
 -- br-tags.
 newtype Textarea = Textarea { unTextarea :: Text }
-    deriving (Show, Read, Eq, PersistField, PersistFieldSql, Ord)
+    deriving (Show, Read, Eq, PersistField, Ord)
+instance PersistFieldSql Textarea where
+    sqlType _ = SqlString
 instance ToHtml Textarea where
     toHtml =
         unsafeByteString
diff --git a/yesod-static/yesod-static.cabal b/yesod-static/yesod-static.cabal
index 9db09b9c..5cdc2846 100644
--- a/yesod-static/yesod-static.cabal
+++ b/yesod-static/yesod-static.cabal
@@ -62,6 +62,7 @@ library
     other-modules:   Yesod.EmbeddedStatic.Internal
 
     ghc-options:     -Wall
+    extensions: TemplateHaskell
 
 test-suite tests
     hs-source-dirs: ., test
@@ -105,6 +106,7 @@ test-suite tests
                    , unordered-containers
 
     ghc-options:     -Wall
+    extensions: TemplateHaskell
 
 source-repository head
   type:     git