diff --git a/lib/crono/cli.rb b/lib/crono/cli.rb
index 8bdd54e..78bc4e7 100644
--- a/lib/crono/cli.rb
+++ b/lib/crono/cli.rb
@@ -1,10 +1,12 @@
 require 'crono'
+require 'optparse'
 
 module Crono
   class CLI
     include Singleton
 
     def run
+      parse_options(ARGV)
       load_rails
       print_banner
       start_working_loop
@@ -20,7 +22,7 @@ module Crono
       require 'rails'
       require File.expand_path("config/environment.rb")
       ::Rails.application.eager_load!
-      require File.expand_path("config/cronotab.rb")
+      require File.expand_path(Crono.config.cronotab)
     end
 
     def run_job(klass)
@@ -30,10 +32,20 @@ module Crono
 
     def start_working_loop
       loop do
-        klass, time = Config.instance.schedule.next
+        klass, time = config.schedule.next
         sleep(time - Time.now)
         run_job(klass)
       end
     end
+
+    def parse_options(argv)
+      OptionParser.new do |opts|
+        opts.banner = "Usage: crono [options]"
+
+        opts.on("-c", "--cronotab cronotab.rb", "Cronotab file (Default: #{Crono.config.cronotab})") do |cronotab|
+          Crono.config.cronotab = cronotab
+        end
+      end.parse!(argv)
+    end
   end
 end
diff --git a/lib/crono/config.rb b/lib/crono/config.rb
index 3e51e30..eb583ac 100644
--- a/lib/crono/config.rb
+++ b/lib/crono/config.rb
@@ -1,11 +1,14 @@
 module Crono
   class Config
+    CRONOTAB = "config/cronotab.rb"
     include Singleton
 
     attr_accessor :schedule
+    attr_accessor :cronotab
 
     def initialize
       self.schedule = Schedule.new
+      self.cronotab = CRONOTAB
     end
   end
 
diff --git a/spec/cli_spec.rb b/spec/cli_spec.rb
index 113928f..8162603 100644
--- a/spec/cli_spec.rb
+++ b/spec/cli_spec.rb
@@ -12,6 +12,7 @@ describe Crono::CLI do
     it "should try to initialize rails with #load_rails and start working loop" do
       expect(cli).to receive(:load_rails)
       expect(cli).to receive(:start_working_loop)
+      expect(cli).to receive(:parse_options)
       cli.run
     end
   end
@@ -26,4 +27,11 @@ describe Crono::CLI do
   describe "#start_working_loop" do
     it "should start working loop"
   end
+
+  describe "#parse_options" do
+    it "should set cronotab" do
+      cli.send(:parse_options, ["--cronotab", "/tmp/cronotab.rb"])
+      expect(Crono.config.cronotab).to be_eql "/tmp/cronotab.rb"
+    end
+  end
 end