diff --git a/Database/Persist/MySQL.hs b/Database/Persist/MySQL.hs
--- a/Database/Persist/MySQL.hs
+++ b/Database/Persist/MySQL.hs
@@ -98,7 +98,7 @@
     conn <- MySQL.connect ci
     MySQLBase.autocommit conn False -- disable autocommit!
     smap <- newIORef $ Map.empty
-    return Connection
+    return SqlBackend
         { connPrepare    = prepare' conn
         , connStmtMap    = smap
         , connInsertSql  = insertSql'
diff --git a/persistent-mysql.cabal b/persistent-mysql.cabal
--- a/persistent-mysql.cabal
+++ b/persistent-mysql.cabal
@@ -1,5 +1,5 @@
 name:            persistent-mysql
-version:         2.0.5
+version:         2.1
 license:         MIT
 license-file:    LICENSE
 author:          Felipe Lessa <felipe.lessa@gmail.com>, Michael Snoyman
@@ -30,7 +30,7 @@
                    , mysql-simple          >= 0.2.2.3  && < 0.3
                    , mysql                 >= 0.1.1.3  && < 0.2
                    , blaze-builder
-                   , persistent            >= 2.0.5    && < 2.1
+                   , persistent            >= 2.1      && < 3
                    , containers            >= 0.2
                    , bytestring            >= 0.9
                    , text                  >= 0.11.0.6