diff --git a/Gemfile b/Gemfile
index bb99de9..0a7b12d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 ruby File.open(File.expand_path('.ruby-version', File.dirname(__FILE__))) { |f| f.read.chomp }
 
 gem 'berkshelf'
-gem 'chef', '~> 12'
+gem 'chef', '~> 15'
 gem 'cookbook_release', git: 'git@github.com:tablexi/chef-cookbook_release_tasks.git'
 
 group :dev do
diff --git a/Gemfile.lock b/Gemfile.lock
index 0526058..6acdc39 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -16,115 +16,115 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     ast (2.4.0)
-    aws-sdk (2.11.79)
-      aws-sdk-resources (= 2.11.79)
-    aws-sdk-core (2.11.79)
-      aws-sigv4 (~> 1.0)
+    aws-eventstream (1.0.3)
+    aws-partitions (1.256.0)
+    aws-sdk-core (3.86.0)
+      aws-eventstream (~> 1.0, >= 1.0.2)
+      aws-partitions (~> 1, >= 1.239.0)
+      aws-sigv4 (~> 1.1)
       jmespath (~> 1.0)
-    aws-sdk-resources (2.11.79)
-      aws-sdk-core (= 2.11.79)
-    aws-sigv4 (1.0.3)
+    aws-sdk-ec2 (1.126.0)
+      aws-sdk-core (~> 3, >= 3.71.0)
+      aws-sigv4 (~> 1.1)
+    aws-sigv4 (1.1.0)
+      aws-eventstream (~> 1.0, >= 1.0.2)
     backports (3.11.4)
-    berkshelf (6.3.4)
-      buff-config (~> 2.0)
-      buff-extensions (~> 2.0)
-      chef (>= 12.7.2, < 14.0)
+    bcrypt_pbkdf (1.0.1)
+    berkshelf (7.0.8)
+      chef (>= 13.6.52)
+      chef-config
       cleanroom (~> 1.0)
       concurrent-ruby (~> 1.0)
-      faraday (~> 0.9)
-      httpclient (~> 2.7)
-      minitar (~> 0.5, >= 0.5.4)
-      mixlib-archive (~> 0.4)
-      mixlib-shellout (~> 2.0)
+      minitar (>= 0.6)
+      mixlib-archive (>= 0.4, < 2.0)
+      mixlib-config (>= 2.2.5)
+      mixlib-shellout (>= 2.0, < 4.0)
       octokit (~> 4.0)
-      retryable (~> 2.0)
-      ridley (~> 5.0)
+      retryable (>= 2.0, < 4.0)
       solve (~> 4.0)
-      thor (~> 0.19, < 0.19.2)
-    buff-config (2.0.0)
-      buff-extensions (~> 2.0)
-      varia_model (~> 0.6)
-    buff-extensions (2.0.0)
-    buff-ignore (1.2.0)
-    buff-ruby_engine (1.0.0)
-    buff-shell_out (1.1.0)
-      buff-ruby_engine (~> 1.0)
-    builder (3.2.3)
-    celluloid (0.16.0)
-      timers (~> 4.0.0)
-    celluloid-io (0.16.2)
-      celluloid (>= 0.16.0)
-      nio4r (>= 1.1.0)
-    chef (12.22.5)
+      thor (>= 0.20)
+    builder (3.2.4)
+    chef (15.6.10)
       addressable
+      bcrypt_pbkdf (~> 1.0)
       bundler (>= 1.10)
-      chef-config (= 12.22.5)
-      chef-zero (>= 4.8, < 13)
+      chef-config (= 15.6.10)
+      chef-utils (= 15.6.10)
+      chef-zero (>= 14.0.11)
       diff-lcs (~> 1.2, >= 1.2.4)
+      ed25519 (~> 1.2)
       erubis (~> 2.7)
+      ffi (~> 1.9, >= 1.9.25)
+      ffi-libarchive
       ffi-yajl (~> 2.2)
-      highline (~> 1.6, >= 1.6.9)
+      highline (>= 1.6.9, < 2)
       iniparse (~> 1.4)
-      mixlib-archive (~> 0.4)
-      mixlib-authentication (~> 1.4)
-      mixlib-cli (~> 1.7)
-      mixlib-log (~> 1.3)
-      mixlib-shellout (~> 2.0)
+      license-acceptance (~> 1.0, >= 1.0.5)
+      mixlib-archive (>= 0.4, < 2.0)
+      mixlib-authentication (>= 2.1, < 4)
+      mixlib-cli (>= 2.1.1, < 3.0)
+      mixlib-log (>= 2.0.3, < 4.0)
+      mixlib-shellout (>= 3.0.3, < 4.0)
       net-sftp (~> 2.1, >= 2.1.2)
-      net-ssh (>= 2.9, < 5.0)
+      net-ssh (>= 4.2, < 6)
       net-ssh-multi (~> 1.2, >= 1.2.1)
-      ohai (>= 8.6.0.alpha.1, < 13)
+      ohai (~> 15.0)
       plist (~> 3.2)
       proxifier (~> 1.0)
-      rspec-core (~> 3.5)
-      rspec-expectations (~> 3.5)
-      rspec-mocks (~> 3.5)
-      rspec_junit_formatter (~> 0.2.0)
-      serverspec (~> 2.7)
-      specinfra (~> 2.10)
       syslog-logger (~> 1.6)
+      train-core (~> 3.1)
+      train-winrm (>= 0.2.5)
+      tty-screen (~> 0.6)
       uuidtools (~> 2.1.5)
     chef-api (0.8.0)
       logify (~> 0.1)
       mime-types
-    chef-config (12.22.5)
+    chef-config (15.6.10)
       addressable
+      chef-utils (= 15.6.10)
       fuzzyurl
-      mixlib-config (~> 2.0)
-      mixlib-shellout (~> 2.0)
+      mixlib-config (>= 2.2.12, < 4.0)
+      mixlib-shellout (>= 2.0, < 4.0)
+      tomlrb (~> 1.2)
+    chef-utils (15.6.10)
     chef-validation (0.2.3)
       chef (>= 11.0.0)
-    chef-zero (5.3.2)
+    chef-zero (14.0.13)
       ffi-yajl (~> 2.2)
       hashie (>= 2.0, < 4.0)
-      mixlib-log (~> 1.3)
-      rack (~> 2.0)
+      mixlib-log (>= 2.0, < 4.0)
+      rack (~> 2.0, >= 2.0.6)
       uuidtools (~> 2.1)
-    chefspec (7.3.4)
-      chef (>= 12.16.42)
-      fauxhai (>= 4)
+    chefspec (7.4.0)
+      chef (>= 13)
+      fauxhai (>= 6.11)
       rspec (~> 3.0)
     cleanroom (1.0.0)
     coderay (1.1.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.5)
     cucumber-core (3.2.1)
       backports (>= 3.8.0)
       cucumber-tag_expressions (~> 1.1.0)
       gherkin (~> 5.0)
     cucumber-tag_expressions (1.1.1)
     diff-lcs (1.3)
+    ed25519 (1.2.4)
+    equatable (0.6.1)
+    erubi (1.9.0)
     erubis (2.7.0)
-    excon (0.62.0)
-    faraday (0.15.2)
+    excon (0.71.1)
+    faraday (0.17.1)
       multipart-post (>= 1.2, < 3)
     faraday-http-cache (2.0.0)
       faraday (~> 0.8)
-    fauxhai (6.10.0)
+    fauxhai (7.4.0)
       net-ssh
-    ffi (1.9.25)
+    ffi (1.11.3)
+    ffi-libarchive (0.4.10)
+      ffi (~> 1.0)
     ffi-yajl (2.3.1)
       libyajl2 (~> 1.2)
     foodcritic (14.2.0)
@@ -146,7 +146,7 @@ GEM
       rainbow (>= 2.1)
       rake (>= 10.0)
       retriable (~> 2.1)
-    gssapi (1.2.0)
+    gssapi (1.3.0)
       ffi (>= 1.0.1)
     guard (2.14.2)
       formatador (>= 0.2.4)
@@ -162,8 +162,8 @@ GEM
       foodcritic (>= 8)
       guard (~> 2.12)
       guard-compat (~> 1.2)
-    guard-kitchen (0.0.2)
-      guard
+    guard-kitchen (0.1.0)
+      guard (> 2.0.0)
       mixlib-shellout
     guard-rspec (4.7.3)
       guard (~> 2.1)
@@ -176,7 +176,6 @@ GEM
       builder (>= 2.1.2)
     hashie (3.6.0)
     highline (1.7.10)
-    hitimes (1.3.0)
     httpclient (2.8.3)
     i18n (1.0.1)
       concurrent-ruby (~> 1.0)
@@ -184,138 +183,120 @@ GEM
     ipaddress (0.8.3)
     jaro_winkler (1.5.1)
     jmespath (1.4.0)
-    json (2.1.0)
+    json (2.3.0)
     kitchen-docker (2.7.0)
       test-kitchen (>= 1.0.0)
-    kitchen-ec2 (2.2.2)
-      aws-sdk (~> 2)
+    kitchen-ec2 (3.2.0)
+      aws-sdk-ec2 (~> 1.0)
       excon
       multi_json
-      retryable (~> 2.0)
-      test-kitchen (~> 1.4, >= 1.4.1)
+      retryable (>= 2.0, < 4.0)
+      test-kitchen (>= 1.4.1, < 3)
     libyajl2 (1.2.0)
-    listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-      ruby_dep (~> 1.2)
+    license-acceptance (1.0.13)
+      pastel (~> 0.7)
+      tomlrb (~> 1.2)
+      tty-box (~> 0.3)
+      tty-prompt (~> 0.18)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
     little-plugger (1.1.4)
     logging (2.2.2)
       little-plugger (~> 1.1)
       multi_json (~> 1.10)
     logify (0.2.0)
-    lumberjack (1.0.12)
-    method_source (0.9.0)
+    lumberjack (1.0.13)
+    method_source (0.9.2)
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mini_portile2 (2.3.0)
-    minitar (0.6.1)
+    minitar (0.9)
     minitest (5.11.3)
-    mixlib-archive (0.4.19)
+    mixlib-archive (1.0.1)
       mixlib-log
-    mixlib-authentication (1.4.2)
-    mixlib-cli (1.7.0)
-    mixlib-config (2.2.18)
+    mixlib-authentication (3.0.4)
+    mixlib-cli (2.1.1)
+    mixlib-config (3.0.5)
       tomlrb
-    mixlib-install (3.11.5)
+    mixlib-install (3.11.24)
       mixlib-shellout
       mixlib-versioning
       thor
-    mixlib-log (1.7.1)
-    mixlib-shellout (2.4.4)
-    mixlib-versioning (1.2.2)
+    mixlib-log (3.0.1)
+    mixlib-shellout (3.0.7)
+    mixlib-versioning (1.2.7)
     molinillo (0.6.6)
-    multi_json (1.13.1)
-    multipart-post (2.0.0)
+    multi_json (1.14.1)
+    multipart-post (2.1.1)
+    necromancer (0.4.0)
     nenv (0.3.0)
-    net-scp (1.2.1)
-      net-ssh (>= 2.6.5)
+    net-scp (2.0.0)
+      net-ssh (>= 2.6.5, < 6.0.0)
     net-sftp (2.1.2)
       net-ssh (>= 2.6.5)
-    net-ssh (4.2.0)
-    net-ssh-gateway (1.3.0)
-      net-ssh (>= 2.6.5)
+    net-ssh (5.2.0)
+    net-ssh-gateway (2.0.0)
+      net-ssh (>= 4.0.0)
     net-ssh-multi (1.2.1)
       net-ssh (>= 2.6.5)
       net-ssh-gateway (>= 1.2.0)
-    net-telnet (0.1.1)
-    nio4r (2.3.1)
     nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     nori (2.6.0)
-    notiffany (0.1.1)
+    notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
-    octokit (4.11.0)
+    octokit (4.14.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    ohai (8.26.1)
-      chef-config (>= 12.5.0.alpha.1, < 14)
+    ohai (15.6.3)
+      chef-config (>= 12.8, < 16)
       ffi (~> 1.9)
       ffi-yajl (~> 2.2)
       ipaddress
-      mixlib-cli
-      mixlib-config (~> 2.0)
-      mixlib-log (>= 1.7.1, < 2.0)
-      mixlib-shellout (~> 2.0)
+      mixlib-cli (>= 1.7.0)
+      mixlib-config (>= 2.0, < 4.0)
+      mixlib-log (>= 2.0.1, < 4.0)
+      mixlib-shellout (>= 2.0, < 4.0)
       plist (~> 3.1)
       systemu (~> 2.6.4)
       wmi-lite (~> 1.0)
     parallel (1.12.1)
     parser (2.5.1.2)
       ast (~> 2.4.0)
+    pastel (0.7.3)
+      equatable (~> 0.6)
+      tty-color (~> 0.5)
     plist (3.5.0)
     polyglot (0.3.5)
     powerpack (0.1.2)
     proxifier (1.0.3)
-    pry (0.11.3)
+    pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.3)
+    public_suffix (4.0.1)
     rack (2.0.8)
     rainbow (3.0.0)
     rake (12.3.1)
     rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
     retriable (2.1.0)
-    retryable (2.0.4)
-    ridley (5.1.1)
-      addressable
-      buff-config (~> 2.0)
-      buff-extensions (~> 2.0)
-      buff-ignore (~> 1.2)
-      buff-shell_out (~> 1.0)
-      celluloid (~> 0.16.0)
-      celluloid-io (~> 0.16.1)
-      chef-config (>= 12.5.0)
-      erubis
-      faraday (~> 0.9)
-      hashie (>= 2.0.2, < 4.0.0)
-      httpclient (~> 2.7)
-      json (>= 1.7.7)
-      mixlib-authentication (>= 1.3.0)
-      retryable (~> 2.0)
-      semverse (~> 2.0)
-      varia_model (~> 0.6)
-    rspec (3.8.0)
-      rspec-core (~> 3.8.0)
-      rspec-expectations (~> 3.8.0)
-      rspec-mocks (~> 3.8.0)
-    rspec-core (3.8.0)
-      rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.2)
+    retryable (3.0.5)
+    rspec (3.9.0)
+      rspec-core (~> 3.9.0)
+      rspec-expectations (~> 3.9.0)
+      rspec-mocks (~> 3.9.0)
+    rspec-core (3.9.0)
+      rspec-support (~> 3.9.0)
+    rspec-expectations (3.9.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-its (1.2.0)
-      rspec-core (>= 3.0.0)
-      rspec-expectations (>= 3.0.0)
-    rspec-mocks (3.8.0)
+      rspec-support (~> 3.9.0)
+    rspec-mocks (3.9.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-support (3.8.0)
-    rspec_junit_formatter (0.2.3)
-      builder (< 4)
-      rspec-core (>= 2, < 4, != 2.12.0)
+      rspec-support (~> 3.9.0)
+    rspec-support (3.9.0)
     rubocop (0.59.2)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
@@ -325,84 +306,104 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.10.0)
-    ruby_dep (1.5.0)
     ruby_gntp (0.3.4)
     rubyntlm (0.6.2)
-    rubyzip (1.2.2)
+    rubyzip (2.0.0)
     rufus-lru (1.1.0)
-    sawyer (0.8.1)
-      addressable (>= 2.3.5, < 2.6)
-      faraday (~> 0.8, < 1.0)
-    semverse (2.0.0)
-    serverspec (2.41.3)
-      multi_json
-      rspec (~> 3.0)
-      rspec-its
-      specinfra (~> 2.72)
-    sfl (2.3)
+    sawyer (0.8.2)
+      addressable (>= 2.3.5)
+      faraday (> 0.8, < 2.0)
+    semverse (3.0.0)
     shellany (0.0.1)
-    solve (4.0.0)
+    solve (4.0.2)
       molinillo (~> 0.6)
-      semverse (>= 1.1, < 3.0)
-    specinfra (2.76.6)
-      net-scp
-      net-ssh (>= 2.7)
-      net-telnet (= 0.1.1)
-      sfl
+      semverse (>= 1.1, < 4.0)
     stove (6.0.0)
       chef-api (~> 0.5)
       logify (~> 0.2)
+    strings (0.1.4)
+      strings-ansi (~> 0.1.0)
+      unicode-display_width (~> 1.4.0)
+      unicode_utils (~> 1.4.0)
+    strings-ansi (0.1.0)
     syslog-logger (1.6.8)
     systemu (2.6.5)
-    test-kitchen (1.23.3)
+    test-kitchen (2.3.4)
+      bcrypt_pbkdf (~> 1.0)
+      ed25519 (~> 1.2)
+      license-acceptance (~> 1.0, >= 1.0.11)
       mixlib-install (~> 3.6)
-      mixlib-shellout (>= 1.2, < 3.0)
-      net-scp (~> 1.1)
-      net-ssh (>= 2.9, < 5.0)
-      net-ssh-gateway (~> 1.2)
+      mixlib-shellout (>= 1.2, < 4.0)
+      net-scp (>= 1.1, < 3.0)
+      net-ssh (>= 2.9, < 6.0)
+      net-ssh-gateway (>= 1.2, < 3.0)
       thor (~> 0.19)
       winrm (~> 2.0)
       winrm-elevated (~> 1.0)
       winrm-fs (~> 1.1)
-    thor (0.19.1)
+    thor (0.20.3)
     thread_safe (0.3.6)
-    timers (4.0.4)
-      hitimes
-    tomlrb (1.2.8)
+    timers (4.3.0)
+    tomlrb (1.2.9)
+    train-core (3.2.5)
+      json (>= 1.8, < 3.0)
+      mixlib-shellout (>= 2.0, < 4.0)
+      net-scp (>= 1.2, < 3.0)
+      net-ssh (>= 2.9, < 6.0)
+    train-winrm (0.2.5)
+      winrm (~> 2.0)
+      winrm-fs (~> 1.0)
     treetop (1.6.10)
       polyglot (~> 0.3)
+    tty-box (0.3.0)
+      pastel (~> 0.7.2)
+      strings (~> 0.1.4)
+      tty-cursor (~> 0.6.0)
+    tty-color (0.5.0)
+    tty-cursor (0.6.1)
+    tty-prompt (0.18.1)
+      necromancer (~> 0.4.0)
+      pastel (~> 0.7.0)
+      timers (~> 4.0)
+      tty-cursor (~> 0.6.0)
+      tty-reader (~> 0.5.0)
+    tty-reader (0.5.0)
+      tty-cursor (~> 0.6.0)
+      tty-screen (~> 0.6.4)
+      wisper (~> 2.0.0)
+    tty-screen (0.6.5)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
     unicode-display_width (1.4.0)
+    unicode_utils (1.4.0)
     uuidtools (2.1.5)
-    varia_model (0.6.0)
-      buff-extensions (~> 2.0)
-      hashie (>= 2.0.2, < 4.0.0)
-    winrm (2.3.0)
+    winrm (2.3.3)
       builder (>= 2.1.2)
-      erubis (~> 2.7)
+      erubi (~> 1.8)
       gssapi (~> 1.2)
       gyoku (~> 1.0)
       httpclient (~> 2.2, >= 2.2.0.2)
       logging (>= 1.6.1, < 3.0)
       nori (~> 2.0)
       rubyntlm (~> 0.6.0, >= 0.6.1)
-    winrm-elevated (1.1.0)
+    winrm-elevated (1.1.2)
+      erubi (~> 1.8)
       winrm (~> 2.0)
       winrm-fs (~> 1.0)
-    winrm-fs (1.3.1)
-      erubis (~> 2.7)
+    winrm-fs (1.3.4)
+      erubi (~> 1.8)
       logging (>= 1.6.1, < 3.0)
-      rubyzip (~> 1.1)
+      rubyzip (~> 2.0)
       winrm (~> 2.0)
-    wmi-lite (1.0.1)
+    wisper (2.0.1)
+    wmi-lite (1.0.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   berkshelf
-  chef (~> 12)
+  chef (~> 15)
   chef-validation
   chef-zero
   chefspec