diff --git a/announcement.gemspec b/announcement.gemspec
index 5c54371..dbb3808 100644
--- a/announcement.gemspec
+++ b/announcement.gemspec
@@ -35,7 +35,13 @@ if old_gemfile_text != new_gemfile_text
   File.open(ENV['PWD']+'/Gemfile', 'w') do |file|
     file.write new_gemfile_text
   end
-  mode = Rails.env.inspect
+  log_development = File.mtime(ENV['PWD']+'/log/development.log').strftime('%Y%m%d%H%M').to_i rescue 0
+  log_production = File.mtime(ENV['PWD']+'/log/production.log').strftime('%Y%m%d%H%M').to_i rescue 0
+  if log_development > log_production
+      mode = 'development'
+  else
+      mode = 'production'
+  end
   a = Thread.start do
     Bundler.with_clean_env do
         puts ENV['PWD']