diff --git a/esqueleto.cabal b/esqueleto.cabal
index 2b0968b..bda81f3 100644
--- a/esqueleto.cabal
+++ b/esqueleto.cabal
@@ -55,7 +55,7 @@ library
   build-depends:
       base                 >= 4.5    && < 4.7
     , text                 == 0.11.*
-    , persistent           >= 1.0.1  && < 1.1
+    , persistent           == 1.1.*
     , transformers         >= 0.2
     , unordered-containers >= 0.2
 
@@ -79,8 +79,8 @@ test-suite test
     , HUnit
     , QuickCheck
     , hspec               == 1.3.*
-    , persistent-sqlite   == 1.0.*
-    , persistent-template == 1.0.*
+    , persistent-sqlite   == 1.1.*
+    , persistent-template == 1.1.*
     , monad-control
     , monad-logger
     , fast-logger         >= 0.2 && < 0.4
diff --git a/src/Database/Esqueleto.hs b/src/Database/Esqueleto.hs
index 684e0cd..d429182 100644
--- a/src/Database/Esqueleto.hs
+++ b/src/Database/Esqueleto.hs
@@ -296,8 +296,10 @@ import qualified Database.Persist.Store
 
 -- | Synonym for 'Database.Persist.Store.delete' that does not
 -- clash with @esqueleto@'s 'delete'.
-deleteKey :: (PersistStore backend m, PersistEntity val)
-          => Key backend val -> backend m ()
+deleteKey :: ( PersistStore m
+             , PersistMonadBackend m ~ PersistEntityBackend val
+             , PersistEntity val )
+          => Key val -> m ()
 deleteKey = Database.Persist.Store.delete
 
 -- $reexports
diff --git a/src/Database/Esqueleto/Internal/Sql.hs b/src/Database/Esqueleto/Internal/Sql.hs
index 97ccfd7..8d95e52 100644
--- a/src/Database/Esqueleto/Internal/Sql.hs
+++ b/src/Database/Esqueleto/Internal/Sql.hs
@@ -49,7 +49,7 @@ import Data.Monoid (Monoid(..), (<>))
 import Database.Persist.EntityDef
 import Database.Persist.GenericSql
 import Database.Persist.GenericSql.Internal (Connection(escapeName, noLimit))
-import Database.Persist.GenericSql.Raw (withStmt, execute)
+import Database.Persist.GenericSql.Raw (execute, SqlBackend, withStmt)
 import Database.Persist.Store hiding (delete)
 import qualified Control.Monad.Trans.Reader as R
 import qualified Control.Monad.Trans.State as S
@@ -83,7 +83,7 @@ instance Applicative SqlQuery where
 
 -- | Constraint synonym for @persistent@ entities whose backend
 -- is 'SqlPersist'.
-type SqlEntity ent = (PersistEntity ent, PersistEntityBackend ent ~ SqlPersist)
+type SqlEntity ent = (PersistEntity ent, PersistEntityBackend ent ~ SqlBackend)
 
 
 ----------------------------------------------------------------------
@@ -242,7 +242,7 @@ parensM Parens = parens
 data OrderByType = ASC | DESC
 
 
-instance Esqueleto SqlQuery SqlExpr SqlPersist where
+instance Esqueleto SqlQuery SqlExpr SqlBackend where
   fromStart = x
     where
       x = do
diff --git a/test/Test.hs b/test/Test.hs
index 749a5d7..dfcb849 100644
--- a/test/Test.hs
+++ b/test/Test.hs
@@ -544,8 +544,11 @@ main = do
 ----------------------------------------------------------------------
 
 
-insert' :: (PersistEntity val, PersistStore (PersistEntityBackend val) m)
-        => val -> PersistEntityBackend val m (Entity val)
+insert' :: ( Functor m
+           , PersistStore m
+           , PersistMonadBackend m ~ PersistEntityBackend val
+           , PersistEntity val )
+        => val -> m (Entity val)
 insert' v = flip Entity v <$> insert v