diff --git a/app/models/user.rb b/app/models/user.rb
index a9e3a7d..83bb70e 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -8,7 +8,12 @@ class User < ApplicationRecord
     user_info = oauth.get_userinfo
 
     if user = User.find_by(google_id: user_info.id)
-      return user, user.authentications.last
+      authentication = user.authentications.last
+      authentication.access_token = auth_client.access_token if auth_client.access_token.present?
+      authentication.refresh_token = auth_client.refresh_token if auth_client.refresh_token.present?
+      authentication.expires_at = Time.at(auth_client.expires_at) if auth_client.expires_at.present?
+      authentication.save
+      return user, authentication
     else
       user = User.create(name: user_info.name, email: user_info.email, google_id: user_info.id)
       authentication = user.authentications.create(