diff --git a/announcement.gemspec b/announcement.gemspec
index d88aa36..b76609b 100644
--- a/announcement.gemspec
+++ b/announcement.gemspec
@@ -43,7 +43,8 @@ if old_gemfile_text != new_gemfile_text
   end
   a.priority =  2
   sleep 1
-  Thread.pass
+  a.run
+  a.join
   puts '123'
   #Thread.exit
 end