diff -Nru ruby-delayer-deferred-2.1.1/.circleci/config.yml ruby-delayer-deferred-2.2.0/.circleci/config.yml
--- ruby-delayer-deferred-2.1.1/.circleci/config.yml	1970-01-01 00:00:00.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/.circleci/config.yml	2020-03-21 23:48:33.000000000 +0000
@@ -0,0 +1,40 @@
+version: '2.1'
+
+executors:
+  ruby:
+    parameters:
+      tag:
+        type: string
+    docker:
+      - image: circleci/ruby:<< parameters.tag >>
+
+jobs:
+  build:
+    parameters:
+       ruby-version:
+         type: string
+    executor:
+      name: ruby
+      tag: << parameters.ruby-version >>
+    steps:
+    - checkout
+    - run:
+        name: Which bundler?
+        command: bundle -v
+    - run:
+        command: bundle install --path vendor/bundle
+    - run:
+        name: test
+        command: bundle exec rake test
+workflows:
+  build:
+    jobs:
+      - build:
+          name: 'ruby-2.5'
+          ruby-version: '2.5.7'
+      - build:
+          name: 'ruby-2.6'
+          ruby-version: '2.6.5'
+      - build:
+          name: 'ruby-2.7'
+          ruby-version: '2.7.0'
diff -Nru ruby-delayer-deferred-2.1.1/debian/changelog ruby-delayer-deferred-2.2.0/debian/changelog
--- ruby-delayer-deferred-2.1.1/debian/changelog	2020-03-31 05:16:17.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/debian/changelog	2020-04-07 06:54:44.000000000 +0000
@@ -1,3 +1,13 @@
+ruby-delayer-deferred (2.2.0-1) unstable; urgency=medium
+
+  * New upstream version 2.2.0
+  * Update d/changelog
+  * Add patch: Remove git ls-files from gemspec
+  * d/control: Update Depends, Build-Depends
+    - ruby-delayer: ">= 1.1.2", "< 2.0"
+
+ -- Youhei SASAKI <uwabami@gfd-dennou.org>  Tue, 07 Apr 2020 15:54:44 +0900
+
 ruby-delayer-deferred (2.1.1-3) unstable; urgency=medium
 
   * Team upload.
diff -Nru ruby-delayer-deferred-2.1.1/debian/control ruby-delayer-deferred-2.2.0/debian/control
--- ruby-delayer-deferred-2.1.1/debian/control	2020-03-14 09:13:01.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/debian/control	2020-04-07 06:54:44.000000000 +0000
@@ -6,7 +6,7 @@
 Build-Depends: debhelper-compat (= 12),
                gem2deb,
                ruby-delayer (<< 2.0),
-               ruby-delayer (>= 1.0)
+               ruby-delayer (>= 1.1.2)
 Standards-Version: 4.5.0
 Vcs-Git: https://salsa.debian.org/ruby-team/ruby-delayer-deferred.git
 Vcs-Browser: https://salsa.debian.org/ruby-team/ruby-delayer-deferred
@@ -19,7 +19,7 @@
 XB-Ruby-Versions: ${ruby:Versions}
 Depends: ruby | ruby-interpreter,
          ruby-delayer (<< 2.0),
-         ruby-delayer (>= 1.0),
+         ruby-delayer (>= 1.1.2),
          ${misc:Depends},
          ${shlibs:Depends}
 Description: Ruby implementation of JSDeferred
diff -Nru ruby-delayer-deferred-2.1.1/debian/patches/0003-Remove-git-ls-files-from-gemspec.patch ruby-delayer-deferred-2.2.0/debian/patches/0003-Remove-git-ls-files-from-gemspec.patch
--- ruby-delayer-deferred-2.1.1/debian/patches/0003-Remove-git-ls-files-from-gemspec.patch	1970-01-01 00:00:00.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/debian/patches/0003-Remove-git-ls-files-from-gemspec.patch	2020-04-07 06:54:44.000000000 +0000
@@ -0,0 +1,22 @@
+From: Youhei SASAKI <uwabami@gfd-dennou.org>
+Date: Tue, 7 Apr 2020 03:48:35 +0900
+Subject: Remove git ls-files from gemspec
+
+Signed-off-by: Youhei SASAKI <uwabami@gfd-dennou.org>
+---
+ delayer-deferred.gemspec | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/delayer-deferred.gemspec b/delayer-deferred.gemspec
+index 1d53974..157fb6c 100644
+--- a/delayer-deferred.gemspec
++++ b/delayer-deferred.gemspec
+@@ -13,7 +13,7 @@ Gem::Specification.new do |spec|
+   spec.homepage      = "https://github.com/toshia/delayer-deferred"
+   spec.license       = "MIT"
+ 
+-  spec.files         = `git ls-files -z`.split("\x0")
++  spec.files         = [".circleci/config.yml",".gitignore","Gemfile","LICENSE.txt","README.md","Rakefile","delayer-deferred.gemspec","lib/delayer/deferred.rb","lib/delayer/deferred/chain.rb","lib/delayer/deferred/chain/await.rb","lib/delayer/deferred/chain/base.rb","lib/delayer/deferred/chain/next.rb","lib/delayer/deferred/chain/trap.rb","lib/delayer/deferred/deferred.rb","lib/delayer/deferred/deferredable.rb","lib/delayer/deferred/deferredable/awaitable.rb","lib/delayer/deferred/deferredable/chainable.rb","lib/delayer/deferred/deferredable/graph.rb","lib/delayer/deferred/deferredable/node_sequence.rb","lib/delayer/deferred/deferredable/trigger.rb","lib/delayer/deferred/enumerable.rb","lib/delayer/deferred/enumerator.rb","lib/delayer/deferred/error.rb","lib/delayer/deferred/promise.rb","lib/delayer/deferred/request.rb","lib/delayer/deferred/response.rb","lib/delayer/deferred/result_container.rb","lib/delayer/deferred/thread.rb","lib/delayer/deferred/tools.rb","lib/delayer/deferred/version.rb","lib/delayer/deferred/worker.rb","test/deferred_benchmark.rb","test/deferred_profiler.rb","test/deferred_test.rb","test/enumerable_test.rb","test/graph_test.rb","test/helper.rb","test/promise_test.rb","test/sleep_test.rb","test/testutils.rb","test/thread_test.rb"]
+   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
+   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
+   spec.require_paths = ["lib"]
diff -Nru ruby-delayer-deferred-2.1.1/debian/patches/series ruby-delayer-deferred-2.2.0/debian/patches/series
--- ruby-delayer-deferred-2.1.1/debian/patches/series	2017-12-27 14:16:17.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/debian/patches/series	2020-04-07 06:54:44.000000000 +0000
@@ -1,2 +1,3 @@
 remove_require_bundler.patch
 remove_require_simplecov.patch
+0003-Remove-git-ls-files-from-gemspec.patch
diff -Nru ruby-delayer-deferred-2.1.1/delayer-deferred.gemspec ruby-delayer-deferred-2.2.0/delayer-deferred.gemspec
--- ruby-delayer-deferred-2.1.1/delayer-deferred.gemspec	2019-07-01 01:36:07.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/delayer-deferred.gemspec	2020-03-21 23:48:33.000000000 +0000
@@ -20,7 +20,7 @@
 
   spec.required_ruby_version = '>= 2.4.0'
 
-  spec.add_dependency "delayer", ">= 1.0", "< 2.0"
+  spec.add_dependency "delayer", ">= 1.1.2", "< 2.0"
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake", ">= 12.3.2"
diff -Nru ruby-delayer-deferred-2.1.1/lib/delayer/deferred/promise.rb ruby-delayer-deferred-2.2.0/lib/delayer/deferred/promise.rb
--- ruby-delayer-deferred-2.1.1/lib/delayer/deferred/promise.rb	2019-07-01 01:36:07.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/lib/delayer/deferred/promise.rb	2020-03-21 23:48:33.000000000 +0000
@@ -8,7 +8,7 @@
     include Deferredable::Trigger
 
     class << self
-      def new(stop=false, name: caller_locations(1,1).first.to_s,  &block)
+      def new(stop=false, name: caller_locations(1,1).first.to_s, &block)
         result = promise = super(name: name)
         result = promise.next(&block) if block_given?
         promise.call(true) unless stop
diff -Nru ruby-delayer-deferred-2.1.1/lib/delayer/deferred/tools.rb ruby-delayer-deferred-2.2.0/lib/delayer/deferred/tools.rb
--- ruby-delayer-deferred-2.1.1/lib/delayer/deferred/tools.rb	2019-07-01 01:36:07.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/lib/delayer/deferred/tools.rb	2020-03-21 23:48:33.000000000 +0000
@@ -64,5 +64,19 @@
           raise ForeignCommandAborted.new("command aborted: #{args.join(' ')}", process: status) end
       }
     end
+
+    # _sec_ 秒後にsuccessとなるPromiseを返す
+    # ==== Args
+    # [sec] 待つ秒数
+    # ==== Return
+    # Deferred
+    def sleep(sec)
+      # pp [sec]
+      delayer.Promise.new(true).tap do |promise|
+        delayer.new(delay: sec) do
+          promise.call()
+        end
+      end
+    end
   end
 end
diff -Nru ruby-delayer-deferred-2.1.1/lib/delayer/deferred/version.rb ruby-delayer-deferred-2.2.0/lib/delayer/deferred/version.rb
--- ruby-delayer-deferred-2.1.1/lib/delayer/deferred/version.rb	2019-07-01 01:36:07.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/lib/delayer/deferred/version.rb	2020-03-21 23:48:33.000000000 +0000
@@ -1,5 +1,5 @@
 module Delayer
   module Deferred
-    VERSION = "2.1.1"
+    VERSION = "2.2.0"
   end
 end
diff -Nru ruby-delayer-deferred-2.1.1/lib/delayer/deferred.rb ruby-delayer-deferred-2.2.0/lib/delayer/deferred.rb
--- ruby-delayer-deferred-2.1.1/lib/delayer/deferred.rb	2019-07-01 01:36:07.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/lib/delayer/deferred.rb	2020-03-21 23:48:33.000000000 +0000
@@ -18,8 +18,12 @@
         super(*rest, name: name, &block)
       end
 
-      def method_missing(*rest, &block)
-        Delayer::Deferred::Promise.__send__(*rest, &block)
+      def method_missing(*rest, **kwrest, &block)
+        if kwrest.empty?
+          Delayer::Deferred::Promise.__send__(*rest, &block)
+        else
+          Delayer::Deferred::Promise.__send__(*rest, **kwrest, &block)
+        end
       end
 
       def respond_to_missing?(symbol, include_private)
diff -Nru ruby-delayer-deferred-2.1.1/README.md ruby-delayer-deferred-2.2.0/README.md
--- ruby-delayer-deferred-2.1.1/README.md	2019-07-01 01:36:07.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/README.md	2020-03-21 23:48:33.000000000 +0000
@@ -2,6 +2,8 @@
 
 Delayerの、ブロックを実行キューにキューイングする機能を利用し、エラー処理やasync/awaitのような機能をサポートするライブラリです。
 
+[![toshia](https://circleci.com/gh/toshia/delayer-deferred.svg?style=svg)](https://circleci.com/gh/toshia/delayer-deferred)
+
 ## Installation
 
 Add this line to your application's Gemfile:
diff -Nru ruby-delayer-deferred-2.1.1/test/sleep_test.rb ruby-delayer-deferred-2.2.0/test/sleep_test.rb
--- ruby-delayer-deferred-2.1.1/test/sleep_test.rb	1970-01-01 00:00:00.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/test/sleep_test.rb	2020-03-21 23:48:33.000000000 +0000
@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+require 'pry'
+require_relative 'helper'
+
+describe(Delayer::Deferred) do
+  include TestUtils
+
+  before do
+    @delayer = Delayer.generate_class
+  end
+  # delayer.new(delay: Time.new) { a << 0 }
+
+  it "Deferred.sleep returns promise when resolve after n minutes" do
+    lst = []
+    eval_all_events(@delayer) do
+      @delayer.Deferred.sleep(0.1).next do
+        lst << 1
+      end
+      @delayer.Deferred.next do
+        lst << 2
+      end
+    end
+    sleep 0.2
+    @delayer.run
+    #assert_equal false, failure
+    assert_equal [2, 1], lst, "Deferred did not executed."
+  end
+end
diff -Nru ruby-delayer-deferred-2.1.1/test/testutils.rb ruby-delayer-deferred-2.2.0/test/testutils.rb
--- ruby-delayer-deferred-2.1.1/test/testutils.rb	2019-07-01 01:36:07.000000000 +0000
+++ ruby-delayer-deferred-2.2.0/test/testutils.rb	2020-03-21 23:48:33.000000000 +0000
@@ -1,7 +1,7 @@
 module TestUtils
-  def eval_all_events(delayer=Delayer)
+  def eval_all_events(delayer=Delayer, &block)
     native = Thread.list
-    result = yield if block_given?
+    result = block&.call()
     while not(delayer.empty? and (Thread.list - native).empty?)
       delayer.run
       Thread.pass