diff --git a/Rakefile b/Rakefile
index 9d4dd528f..05aca9e9d 100644
--- a/Rakefile
+++ b/Rakefile
@@ -90,7 +90,7 @@ end
 
 
 desc "build all platform gems at once"
-task :gems => [:rmgems, "ruby:gem", "jruby:gem", "mswin32:gem", "mingw32:gem"]
+task :gems => [:clean, :rmgems, "ruby:gem", "jruby:gem", "mswin32:gem", "mingw32:gem"]
 
 desc "remove all platform gems"
 task :rmgems => ["ruby:clobber_package"]