diff --git a/Yesod/Auth.hs b/Yesod/Auth.hs
--- a/Yesod/Auth.hs
+++ b/Yesod/Auth.hs
@@ -34,7 +34,11 @@
 import Data.Text.Encoding.Error (lenientDecode)
 import           Data.Text (Text)
 import qualified Data.Text as T
+#if MIN_VERSION_aeson(0, 4, 0)
+import qualified Data.HashMap.Lazy as Map
+#else
 import qualified Data.Map as Map
+#endif
 
 import Language.Haskell.TH.Syntax hiding (lift)
 
diff --git a/yesod-auth.cabal b/yesod-auth.cabal
--- a/yesod-auth.cabal
+++ b/yesod-auth.cabal
@@ -1,5 +1,5 @@
 name:            yesod-auth
-version:         0.7.6.1
+version:         0.7.6.2
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman, Patrick Brisbin
@@ -36,7 +36,8 @@
                    , hamlet                  >= 0.10      && < 0.11
                    , shakespeare-css         >= 0.10      && < 0.11
                    , yesod-json              >= 0.2       && < 0.3
-                   , containers              >= 0.2       && < 0.5
+                   , containers
+                   , unordered-containers
                    , yesod-form              >= 0.3       && < 0.4
                    , transformers            >= 0.2.2     && < 0.3
                    , persistent              >= 0.6       && < 0.7