Rakefile in rufus-scheduler-2.0.9 vs Rakefile in rufus-scheduler-2.0.10

@@ -18,10 +18,10 @@
 #
 # test / spec
 
 #task :spec => :check_dependencies do
 task :spec do
-  sh 'rspec spec/'
+  exec 'rspec spec/'
 end
 task :test => :spec
 
 task :default => :spec