diff --git a/Rakefile b/Rakefile
index b7e9ed5..3882576 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,6 +1,10 @@
 require "bundler/gem_tasks"
 require "rspec/core/rake_task"
 
-RSpec::Core::RakeTask.new(:spec)
+RSpec::Core::RakeTask.new(:spec, :example_pattern) do |task, args|
+  if args.example_pattern
+    task.rspec_opts = %W[-e "#{args.example_pattern}" -f documentation]
+  end
+end
 
 task :default => :spec