diff --git a/yesod-auth-oauth/yesod-auth-oauth.cabal b/yesod-auth-oauth/yesod-auth-oauth.cabal
index 6a952db6..70cea8ac 100644
--- a/yesod-auth-oauth/yesod-auth-oauth.cabal
+++ b/yesod-auth-oauth/yesod-auth-oauth.cabal
@@ -27,7 +27,7 @@ library
                    , yesod-auth              >= 1.4       && < 1.5
                    , text                    >= 0.7
                    , yesod-form              >= 1.4       && < 1.5
-                   , transformers            >= 0.2.2     && < 0.5
+                   , transformers            >= 0.2.2     && < 0.6
                    , lifted-base             >= 0.2       && < 0.3
     exposed-modules: Yesod.Auth.OAuth
     ghc-options:     -Wall