diff --git a/Yesod/Markdown.hs b/Yesod/Markdown.hs
--- a/Yesod/Markdown.hs
+++ b/Yesod/Markdown.hs
@@ -38,6 +38,7 @@
 import Data.Text.Encoding.Error (lenientDecode)
 
 import Database.Persist (PersistField)
+import Database.Persist.Sql (PersistFieldSql)
 import System.Directory (doesFileExist)
 
 import Text.Blaze (ToMarkup (toMarkup))
@@ -55,7 +56,7 @@
 import qualified Data.Text       as T
 
 newtype Markdown = Markdown { unMarkdown :: Text }
-    deriving (Eq, Ord, Show, Read, PersistField, IsString, Monoid)
+    deriving (Eq, Ord, Show, Read, PersistField, PersistFieldSql, IsString, Monoid)
 
 instance ToMarkup Markdown where
     -- | Sanitized by default
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:             0.8.0
+version:             0.8.1
 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