diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Changelog for persistent-mongoDB
 
+## 2.9.0.2
+
+* Compatibility with latest mongoDB [#1012](https://github.com/yesodweb/persistent/pull/1012)
+
 ## 2.9.0.1
 
 * Compatibility with latest persistent-template for test suite [#1002](https://github.com/yesodweb/persistent/pull/1002/files)
diff --git a/Database/Persist/MongoDB.hs b/Database/Persist/MongoDB.hs
--- a/Database/Persist/MongoDB.hs
+++ b/Database/Persist/MongoDB.hs
@@ -548,7 +548,8 @@
            $ updatesToDoc upds
 
     updateGet key upds = do
-        result <- DB.findAndModify (queryByKey key) (updatesToDoc upds)
+        context <- ask
+        result <- liftIO $ runReaderT (DB.findAndModify (queryByKey key) (updatesToDoc upds)) context
         either err instantiate result
       where
         instantiate doc = do
diff --git a/persistent-mongoDB.cabal b/persistent-mongoDB.cabal
--- a/persistent-mongoDB.cabal
+++ b/persistent-mongoDB.cabal
@@ -1,5 +1,5 @@
 name:            persistent-mongoDB
-version:         2.9.0.1
+version:         2.9.0.2
 license:         MIT
 license-file:    LICENSE
 author:          Greg Weber <greg@gregweber.info>
@@ -27,7 +27,7 @@
                    , cereal             >= 0.5
                    , conduit            >= 1.2
                    , http-api-data      >= 0.3.7     && < 0.5
-                   , mongoDB            >= 2.3
+                   , mongoDB            >= 2.3       && < 2.7
                    , network            >= 2.6
                    , path-pieces        >= 0.2
                    , resource-pool      >= 0.2       && < 0.3