diff --git a/Rakefile b/Rakefile
index 25368c3..5b9810a 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,27 +1,7 @@
 require 'rake'
 require 'rake/testtask'
 require 'rake/clean'
-
-begin
-  require 'jeweler'
-  Jeweler::Tasks.new do |gemspec|
-    gemspec.name = "fluent-plugin-sqs"
-    gemspec.summary = "Amazon SQS input/output plugin for Fluent event collector"
-    gemspec.author = "Yuri Odagiri"
-    gemspec.email = "ixixizko@gmail.com"
-    gemspec.homepage = "https://github.com/ixixi/fluent-plugin-sqs"
-    gemspec.has_rdoc = false
-    gemspec.require_paths = ["lib"]
-    gemspec.add_dependency "fluentd", "~> 0.10.0"
-    gemspec.add_dependency "aws-sdk", "~> 1.3.2"
-    gemspec.test_files = Dir["test/**/*.rb", "spec/**/*.rb"]
-    gemspec.files = Dir["lib/**/*", "test/**/*.rb", "spec/**/*.rb"] + %w[VERSION AUTHORS Rakefile]
-    gemspec.executables = []
-  end
-  Jeweler::GemcutterTasks.new
-rescue LoadError
-  puts "Jeweler not available. Install it with: gem install jeweler"
-end
+require "bundler/gem_tasks"
 
 Rake::TestTask.new(:test) do |t|
   t.test_files = Dir['test/*_test.rb']
diff --git a/fluent-plugin-sqs.gemspec b/fluent-plugin-sqs.gemspec
index eb27e4d..e924b40 100644
--- a/fluent-plugin-sqs.gemspec
+++ b/fluent-plugin-sqs.gemspec
@@ -1,11 +1,8 @@
-# Generated by jeweler
-# DO NOT EDIT THIS FILE DIRECTLY
-# Instead, edit Jeweler::Tasks in Rakefile, and run 'rake gemspec'
 # -*- encoding: utf-8 -*-
 
 Gem::Specification.new do |s|
   s.name = "fluent-plugin-sqs"
-  s.version = "1.4.1"
+  s.version = "1.4.4"
 
   s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
   s.authors = ["Yuri Odagiri"]