diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
index 7b7e6061..049df414 100644
--- a/config/initializers/omniauth.rb
+++ b/config/initializers/omniauth.rb
@@ -3,7 +3,23 @@
 OmniAuth.config.logger = Rails.logger
 
 Rails.application.config.middleware.use OmniAuth::Builder do
-  provider :google_oauth2, ENV['GOOGLE_CONSUMER_KEY'], ENV['GOOGLE_CONSUMER_SECRET'], verify_iss: false
+  provider :google_oauth2, {
+    verify_iss: false,
+    setup: proc do |env|
+      host = env['SERVER_NAME']
+      tld = host[/(.+\.)?(.+\..+)/, 2]
+      token = tld.delete('-').split('.').join('_').upcase
+      name = "OMNIAUTH_GOOGLE_#{token}"
+
+      if env.has_key?("#{name}_KEY") && env.has_key?("#{name}_SECRET")
+        env['omniauth.strategy'].options[:client_id]     = ENV["#{name}_KEY"]
+        env['omniauth.strategy'].options[:client_secret] = ENV["#{name}_SECRET"]
+      else
+        env['omniauth.strategy'].options[:client_id]     = ENV['GOOGLE_CONSUMER_KEY']
+        env['omniauth.strategy'].options[:client_secret] = ENV['GOOGLE_CONSUMER_SECRET']
+      end
+    end
+  }
   provider :twitter, ENV['TWITTER_CONSUMER_KEY'], ENV['TWITTER_CONSUMER_SECRET']
   provider :github, {
     setup: proc do |env|