diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # ChangeLog for yesod-auth-oauth
 
+## 1.6.1
+
+* Allow newer GHC
+
 ## 1.6.0.3
 
 * Allow yesod-form 1.7
diff --git a/Yesod/Auth/OAuth.hs b/Yesod/Auth/OAuth.hs
--- a/Yesod/Auth/OAuth.hs
+++ b/Yesod/Auth/OAuth.hs
@@ -18,7 +18,6 @@
 import           Control.Arrow            ((***))
 import           UnliftIO.Exception
 import           Control.Monad.IO.Class
-import           UnliftIO                 (MonadUnliftIO)
 import           Data.ByteString          (ByteString)
 import           Data.Maybe
 import           Data.Text                (Text)
@@ -53,14 +52,9 @@
     oauthSessionName = "__oauth_token_secret"
 
     dispatch
-      :: ( MonadHandler m
-         , master ~ HandlerSite m
-         , Auth ~ SubHandlerSite m
-         , MonadUnliftIO m
-         )
-      => Text
+      :: Text
       -> [Text]
-      -> m TypedContent
+      -> AuthHandler master TypedContent
     dispatch "GET" ["forward"] = do
         render <- getUrlRender
         tm <- getRouteToParent
diff --git a/yesod-auth-oauth.cabal b/yesod-auth-oauth.cabal
--- a/yesod-auth-oauth.cabal
+++ b/yesod-auth-oauth.cabal
@@ -1,6 +1,6 @@
 cabal-version:   >= 1.10
 name:            yesod-auth-oauth
-version:         1.6.0.3
+version:         1.6.1
 license:         BSD3
 license-file:    LICENSE
 author:          Hiromi Ishii
@@ -15,7 +15,7 @@
 
 library
     default-language: Haskell2010
-    build-depends:   authenticate-oauth      >= 1.5       && < 1.7
+    build-depends:   authenticate-oauth      >= 1.5       && < 1.8
                    , base                    >= 4.10      && < 5
                    , bytestring              >= 0.9.1.4
                    , text                    >= 0.7