diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..18b2379
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,30 @@
+# Changelog
+
+## 1.4.0
+### Features
+* supports vagrant 1.5 [[#80](https://github.com/smdahlen/vagrant-hostmanager/issues/80), [#81](https://github.com/smdahlen/vagrant-hostmanager/pull/81)]
+* only updates hosts file if contents have changed [[#78](https://github.com/smdahlen/vagrant-hostmanager/pull/78)]
+* custom ip resolver now has access to the machine whose hosts file is being updated [[#62](https://github.com/smdahlen/vagrant-hostmanager/pull/62)]
+
+### Bug fixes
+* custom IP resolver result no longer ignored [[#57](https://github.com/smdahlen/vagrant-hostmanager/pull/57)]
+* when multiple private_networks are configured, the first one is used [[#64](https://github.com/smdahlen/vagrant-hostmanager/pull/64)]
+* destroyed machines are now removed from hosts file [[#52](https://github.com/smdahlen/vagrant-hostmanager/pull/52)]
+
+[Full diff](https://github.com/smdahlen/vagrant-hostmanager/compare/v1.3.0...v1.4.0)  
+
+
+## 1.3.0
+### Features
+* allow defining a custom IP resolver block [[#15](https://github.com/smdahlen/vagrant-hostmanager/pull/15)]
+* handle removing destroyed machines from hosts file (currently only works with `include_offline = true`) [[#45](https://github.com/smdahlen/vagrant-hostmanager/pull/45)]
+* attempt to elevate privileges when needed in Windows hosts [[#48](https://github.com/smdahlen/vagrant-hostmanager/pull/48)]
+
+### Bug fixes
+* `--provider` command-line option now finds machines as expected [[#46](https://github.com/smdahlen/vagrant-hostmanager/pull/46)]
+* uses proper `hosts` file location in Windows under cygwin [[#49](https://github.com/smdahlen/vagrant-hostmanager/pull/49)]
+
+### Miscelaneous
+* MIT license added to gemspec
+
+[Full diff](https://github.com/smdahlen/vagrant-hostmanager/compare/v1.2.3...v1.3.0)
diff --git a/Gemfile b/Gemfile
index 137bac0..fecf40e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,9 @@
 source 'https://rubygems.org'
 
 group :development do
-  gem 'vagrant', :git => 'git://github.com/mitchellh/vagrant.git', :tag => 'v1.2.7'
+  gem 'vagrant', :git => 'git://github.com/mitchellh/vagrant.git', :tag => 'v1.5.1'
 end
 
-gemspec
+group :plugins do
+  gemspec
+end
diff --git a/lib/vagrant-hostmanager/action/update_all.rb b/lib/vagrant-hostmanager/action/update_all.rb
index 7dcdcbe..d2671d9 100644
--- a/lib/vagrant-hostmanager/action/update_all.rb
+++ b/lib/vagrant-hostmanager/action/update_all.rb
@@ -11,6 +11,14 @@ module VagrantPlugins
           @machine = env[:machine]
           @global_env = @machine.env
           @provider = @machine.provider_name
+
+          # config_global is deprecated from v1.5
+          if Gem::Version.new(::Vagrant::VERSION) >= Gem::Version.new('1.5')
+            @config = @global_env.vagrantfile.config
+          else
+            @config = @global_env.config_global
+          end
+
           @logger = Log4r::Logger.new('vagrant::hostmanager::update_all')
         end
 
@@ -21,7 +29,7 @@ module VagrantPlugins
           return @app.call(env) if !@machine.id && env[:machine_action] == :destroy
 
           # check config to see if the hosts file should be update automatically
-          return @app.call(env) unless @global_env.config_global.hostmanager.enabled?
+          return @app.call(env) unless @config.hostmanager.enabled?
           @logger.info 'Updating /etc/hosts file automatically'
 
           @app.call(env)
diff --git a/lib/vagrant-hostmanager/action/update_guest.rb b/lib/vagrant-hostmanager/action/update_guest.rb
index 73a7cb1..7ab7352 100644
--- a/lib/vagrant-hostmanager/action/update_guest.rb
+++ b/lib/vagrant-hostmanager/action/update_guest.rb
@@ -11,6 +11,14 @@ module VagrantPlugins
           @machine = env[:machine]
           @global_env = @machine.env
           @provider = env[:provider]
+
+          # config_global is deprecated from v1.5
+          if Gem::Version.new(::Vagrant::VERSION) >= Gem::Version.new('1.5')
+            @config = @global_env.vagrantfile.config
+          else
+            @config = @global_env.config_global
+          end
+          
           @logger = Log4r::Logger.new('vagrant::hostmanager::update_guest')
         end
 
diff --git a/lib/vagrant-hostmanager/action/update_host.rb b/lib/vagrant-hostmanager/action/update_host.rb
index 5418953..8d48255 100644
--- a/lib/vagrant-hostmanager/action/update_host.rb
+++ b/lib/vagrant-hostmanager/action/update_host.rb
@@ -10,11 +10,19 @@ module VagrantPlugins
           @app = app
           @global_env = env[:global_env]
           @provider = env[:provider]
+
+          # config_global is deprecated from v1.5
+          if Gem::Version.new(::Vagrant::VERSION) >= Gem::Version.new('1.5')
+            @config = @global_env.vagrantfile.config
+          else
+            @config = @global_env.config_global
+          end
+
           @logger = Log4r::Logger.new('vagrant::hostmanager::update_host')
         end
 
         def call(env)
-          if @global_env.config_global.hostmanager.manage_host?
+          if @config.hostmanager.manage_host?
             env[:ui].info I18n.t('vagrant_hostmanager.action.update_host')
             update_host
           end
diff --git a/lib/vagrant-hostmanager/hosts_file.rb b/lib/vagrant-hostmanager/hosts_file.rb
index c1dcf6e..a08be74 100644
--- a/lib/vagrant-hostmanager/hosts_file.rb
+++ b/lib/vagrant-hostmanager/hosts_file.rb
@@ -25,11 +25,13 @@ module VagrantPlugins
         # download and modify file with Vagrant-managed entries
         file = @global_env.tmp_path.join("hosts.#{machine.name}")
         machine.communicate.download(realhostfile, file)
-        update_file(file, machine)
+        if update_file(file, machine, false)
+
+          # upload modified file and remove temporary file
+          machine.communicate.upload(file, '/tmp/hosts')
+          machine.communicate.sudo("#{move_cmd} /tmp/hosts #{realhostfile}")
+        end
 
-        # upload modified file and remove temporary file
-        machine.communicate.upload(file, '/tmp/hosts')
-        machine.communicate.sudo("#{move_cmd} /tmp/hosts #{realhostfile}")
         # i have no idea if this is a windows competibility issue or not, but sometimes it dosen't work on my machine
         begin
           FileUtils.rm(file) 
@@ -55,49 +57,36 @@ module VagrantPlugins
         end
 
         FileUtils.cp(hosts_location, file)
-        update_file(file)
-        copy_proc.call
+        if update_file(file)
+          copy_proc.call
+        end
       end
 
       private
 
-      def update_file(file, resolving_machine=nil)
-        # build array of host file entries from Vagrant configuration
-        entries = []
-        destroyed_entries = []
-        ids = []
-        get_machines.each do |name, p|
-          if @provider == p
-            machine = @global_env.machine(name, p)
-            host = machine.config.vm.hostname || name
-            id = machine.id
-            ip = get_ip_address(machine, resolving_machine)
-            aliases = machine.config.hostmanager.aliases.join(' ').chomp
-            if id.nil?
-              destroyed_entries << "#{ip}\t#{host} #{aliases}"
-            else
-              entries <<  "#{ip}\t#{host} #{aliases}\t# VAGRANT ID: #{id}\n"
-              ids << id unless ids.include?(id)
-            end
-          end
-        end
+      def update_file(file, resolving_machine = nil, include_id = true)
+        file = Pathname.new(file)
+        old_file_content = file.read
+        new_file_content = update_content(old_file_content, resolving_machine, include_id)
+        file.open('w') { |io| io.write(new_file_content) }
+        old_file_content != new_file_content
+      end
 
-        tmp_file = Tempfile.open('hostmanager', @global_env.tmp_path, 'a')
-        begin
-          # copy each line not managed by Vagrant
-          File.open(file).each_line do |line|
-            # Eliminate lines for machines that have been destroyed
-            next if destroyed_entries.any? { |entry| line =~ /^#{entry}\t# VAGRANT ID: .*/ }
-            tmp_file << line unless ids.any? { |id| line =~ /# VAGRANT ID: #{id}/ }
-          end
+      def update_content(file_content, resolving_machine, include_id)
+        id = include_id ? " id: #{read_or_create_id}" : ""
+        header = "## vagrant-hostmanager-start#{id}\n"
+        footer = "## vagrant-hostmanager-end\n"
+        body = get_machines
+          .map { |machine| get_hosts_file_entry(machine, resolving_machine) }
+          .join
+        get_new_content(header, footer, body, file_content) 
+      end
 
-          # write a line for each Vagrant-managed entry
-          entries.each { |entry| tmp_file << entry }
-        ensure
-          tmp_file.close
-          FileUtils.cp(tmp_file, file)
-          tmp_file.unlink
-        end
+      def get_hosts_file_entry(machine, resolving_machine)
+        ip = get_ip_address(machine, resolving_machine)
+        host = machine.config.vm.hostname || machine.name
+        aliases = machine.config.hostmanager.aliases.join(' ').chomp
+        "#{ip}\t#{host} #{aliases}\n"
       end
 
       def get_ip_address(machine, resolving_machine)
@@ -110,27 +99,57 @@ module VagrantPlugins
             machine.config.vm.networks.each do |network|
               key, options = network[0], network[1]
               ip = options[:ip] if key == :private_network
-              next if ip
+              break if ip
             end
           end
           ip || (machine.ssh_info ? machine.ssh_info[:host] : nil)
-        end        
+        end
       end
 
       def get_machines
-        if @global_env.config_global.hostmanager.include_offline?
-          machines = []
-          @global_env.machine_names.each do |name|
-            begin
-              @global_env.machine(name, @provider)
-              machines << [name, @provider]
-            rescue Vagrant::Errors::MachineNotFound
-            end
-          end
-          machines
+        if @config.hostmanager.include_offline?
+          machines = @global_env.machine_names
         else
-          @global_env.active_machines
+          machines = @global_env.active_machines
+            .select { |name, provider| provider == @provider }
+            .collect { |name, provider| name }
         end
+        # Collect only machines that exist for the current provider
+        machines.collect do |name|
+              begin
+                machine = @global_env.machine(name, @provider)
+              rescue Vagrant::Errors::MachineNotFound
+                # ignore
+              end
+              machine
+            end
+          .reject(&:nil?)
+      end
+
+      def get_new_content(header, footer, body, old_content)
+        if body.empty?
+          block = "\n"
+        else
+          block = "\n\n" + header + body + footer + "\n"
+        end
+        # Pattern for finding existing block
+        header_pattern = Regexp.quote(header)
+        footer_pattern = Regexp.quote(footer)
+        pattern = Regexp.new("\n*#{header_pattern}.*?#{footer_pattern}\n*", Regexp::MULTILINE)
+        # Replace existing block or append
+        old_content.match(pattern) ? old_content.sub(pattern, block) : old_content.rstrip + block
+      end
+
+      def read_or_create_id
+        file = Pathname.new("#{@global_env.local_data_path}/hostmanager/id")
+        if (file.file?)
+          id = file.read.strip
+        else
+          id = SecureRandom.uuid
+          file.dirname.mkpath
+          file.open('w') { |io| io.write(id) }
+        end
+        id
       end
 
       ## Windows support for copying files, requesting elevated privileges if necessary
diff --git a/lib/vagrant-hostmanager/plugin.rb b/lib/vagrant-hostmanager/plugin.rb
index 8369d19..86dab08 100644
--- a/lib/vagrant-hostmanager/plugin.rb
+++ b/lib/vagrant-hostmanager/plugin.rb
@@ -29,6 +29,12 @@ module VagrantPlugins
         Provisioner
       end
 
+      # Work-around for vagrant >= 1.5
+      # It breaks without a provisioner config, so we provide a dummy one
+      config(:hostmanager, :provisioner) do
+        ::Vagrant::Config::V2::DummyConfig.new
+      end
+
       command(:hostmanager) do
         require_relative 'command'
         Command
diff --git a/lib/vagrant-hostmanager/provisioner.rb b/lib/vagrant-hostmanager/provisioner.rb
index 4c5397e..afe027a 100644
--- a/lib/vagrant-hostmanager/provisioner.rb
+++ b/lib/vagrant-hostmanager/provisioner.rb
@@ -7,11 +7,19 @@ module VagrantPlugins
         super(machine, config)
         @global_env = machine.env
         @provider = machine.provider_name
+
+        # config_global is deprecated from v1.5
+        if Gem::Version.new(::Vagrant::VERSION) >= Gem::Version.new('1.5')
+          @config = @global_env.vagrantfile.config
+        else
+          @config = @global_env.config_global
+        end
+
       end
 
       def provision
         update_guest(@machine)
-        if @global_env.config_global.hostmanager.manage_host?
+        if @config.hostmanager.manage_host?
           update_host
         end
       end
diff --git a/lib/vagrant-hostmanager/version.rb b/lib/vagrant-hostmanager/version.rb
index 6f78a08..6410bd0 100644
--- a/lib/vagrant-hostmanager/version.rb
+++ b/lib/vagrant-hostmanager/version.rb
@@ -1,5 +1,5 @@
 module VagrantPlugins
   module HostManager
-    VERSION = '1.3.0'
+    VERSION = '1.4.0'
   end
 end
diff --git a/test/Vagrantfile b/test/Vagrantfile
index b3a4f31..24683e6 100644
--- a/test/Vagrantfile
+++ b/test/Vagrantfile
@@ -1,11 +1,18 @@
 # -*- mode: ruby -*-
 # vi: set ft=ruby :
 
-Vagrant.require_plugin('vagrant-hostmanager')
+if Gem::Version.new(::Vagrant::VERSION) < Gem::Version.new('1.5')
+  Vagrant.require_plugin('vagrant-hostmanager')
+end
 
 Vagrant.configure('2') do |config|
-  config.vm.box = 'precise64'
-  config.vm.box_url = 'http://cloud-images.ubuntu.com/precise/current/precise-server-cloudimg-vagrant-amd64-disk1.box'
+
+  if ENV.key? 'VAGRANT_BOX'
+    config.vm.box = ENV['VAGRANT_BOX']
+  else
+    config.vm.box = 'precise64'
+    config.vm.box_url = 'http://cloud-images.ubuntu.com/precise/current/precise-server-cloudimg-vagrant-amd64-disk1.box'
+  end
 
   config.hostmanager.enabled = true
   config.hostmanager.manage_host = true
@@ -20,4 +27,10 @@ Vagrant.configure('2') do |config|
     server.vm.hostname = 'bender'
     server.vm.network :private_network, :ip => '10.0.5.3'
   end
-end
+
+  config.vm.define :server3 do |server|
+    server.vm.hostname = 'leena'
+    server.vm.network :private_network, :ip => '10.0.5.4'
+    server.vm.provision :hostmanager
+  end
+end
\ No newline at end of file