diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+## 1.6.0.2
+
+* Remove unnecessary deriving of Typeable
+
 ## 1.6.0.1
 
 * Compile with GHC 8.6 [#1561](https://github.com/yesodweb/yesod/pull/1561)
diff --git a/Yesod/Auth/OAuth.hs b/Yesod/Auth/OAuth.hs
--- a/Yesod/Auth/OAuth.hs
+++ b/Yesod/Auth/OAuth.hs
@@ -1,4 +1,4 @@
-{-# LANGUAGE DeriveDataTypeable, OverloadedStrings, QuasiQuotes #-}
+{-# LANGUAGE OverloadedStrings, QuasiQuotes #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE RankNTypes #-}
@@ -32,7 +32,7 @@
 
 data YesodOAuthException = CredentialError String Credential
                          | SessionError String
-                           deriving (Show, Typeable)
+                           deriving Show
 
 instance Exception YesodOAuthException
 
@@ -130,7 +130,7 @@
             -> ByteString -- ^ Consumer Secret
             -> AuthPlugin m
 authTwitter key secret = authTwitter' key secret "screen_name"
-{-# DEPRECATED authTwitter "Use authTwitterUsingUserID instead" #-}
+{-# DEPRECATED authTwitter "Use authTwitterUsingUserId instead" #-}
 
 -- | Twitter plugin which uses Twitter's /user_id/ as ID.
 --
diff --git a/yesod-auth-oauth.cabal b/yesod-auth-oauth.cabal
--- a/yesod-auth-oauth.cabal
+++ b/yesod-auth-oauth.cabal
@@ -1,5 +1,6 @@
+cabal-version:   >= 1.10
 name:            yesod-auth-oauth
-version:         1.6.0.1
+version:         1.6.0.2
 license:         BSD3
 license-file:    LICENSE
 author:          Hiromi Ishii
@@ -7,21 +8,15 @@
 synopsis:        OAuth Authentication for Yesod.
 category:        Web, Yesod
 stability:       Stable
-cabal-version:   >= 1.6.0
 build-type:      Simple
 homepage:        http://www.yesodweb.com/
 description:     API docs and the README are available at <http://www.stackage.org/package/yesod-auth-oauth>
 extra-source-files: README.md ChangeLog.md
 
-flag ghc7
-
 library
-    if flag(ghc7)
-        build-depends:   base                >= 4.3      && < 5
-        cpp-options:     -DGHC7
-    else
-        build-depends:   base                >= 4         && < 4.3
+    default-language: Haskell2010
     build-depends:   authenticate-oauth      >= 1.5       && < 1.7
+                   , base                    >= 4.10      && < 5
                    , bytestring              >= 0.9.1.4
                    , text                    >= 0.7
                    , unliftio