diff --git a/yesod-auth/Yesod/Auth/GoogleEmail.hs b/yesod-auth/Yesod/Auth/GoogleEmail.hs
index fd9c2bd6..509ea283 100644
--- a/yesod-auth/Yesod/Auth/GoogleEmail.hs
+++ b/yesod-auth/Yesod/Auth/GoogleEmail.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE CPP #-}
 {-# LANGUAGE RankNTypes #-}
diff --git a/yesod-auth/Yesod/Auth/GoogleEmail2.hs b/yesod-auth/Yesod/Auth/GoogleEmail2.hs
index 7a1c1824..92608623 100644
--- a/yesod-auth/Yesod/Auth/GoogleEmail2.hs
+++ b/yesod-auth/Yesod/Auth/GoogleEmail2.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE QuasiQuotes       #-}
 -- | Use an email address as an identifier via Google's login system.
 --
diff --git a/yesod-auth/Yesod/Auth/OpenId.hs b/yesod-auth/Yesod/Auth/OpenId.hs
index fd30a43a..387454eb 100644
--- a/yesod-auth/Yesod/Auth/OpenId.hs
+++ b/yesod-auth/Yesod/Auth/OpenId.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE CPP #-}