diff --git a/Gemfile b/Gemfile
index a234afe..c4cb6bf 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'
 
 group :ci do
   gem 'bump'
diff --git a/Gemfile.lock b/Gemfile.lock
index e6f868b..6256b95 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,25 +49,27 @@ GEM
     celluloid-io (0.16.2)
       celluloid (>= 0.16.0)
       nio4r (>= 1.1.0)
-    chef (12.22.5)
+    chef (14.3.37)
       addressable
       bundler (>= 1.10)
-      chef-config (= 12.22.5)
-      chef-zero (>= 4.8, < 13)
+      chef-config (= 14.3.37)
+      chef-zero (>= 13.0)
       diff-lcs (~> 1.2, >= 1.2.4)
       erubis (~> 2.7)
+      ffi (~> 1.9, >= 1.9.25)
       ffi-yajl (~> 2.2)
       highline (~> 1.6, >= 1.6.9)
       iniparse (~> 1.4)
+      iso8601 (~> 0.9.1)
       mixlib-archive (~> 0.4)
-      mixlib-authentication (~> 1.4)
+      mixlib-authentication (~> 2.1)
       mixlib-cli (~> 1.7)
-      mixlib-log (~> 1.3)
+      mixlib-log (~> 2.0, >= 2.0.3)
       mixlib-shellout (~> 2.0)
       net-sftp (~> 2.1, >= 2.1.2)
-      net-ssh (>= 2.9, < 5.0)
+      net-ssh (~> 4.2)
       net-ssh-multi (~> 1.2, >= 1.2.1)
-      ohai (>= 8.6.0.alpha.1, < 13)
+      ohai (~> 14.0)
       plist (~> 3.2)
       proxifier (~> 1.0)
       rspec-core (~> 3.5)
@@ -81,15 +83,16 @@ GEM
     chef-api (0.8.0)
       logify (~> 0.1)
       mime-types
-    chef-config (12.22.5)
+    chef-config (14.3.37)
       addressable
       fuzzyurl
-      mixlib-config (~> 2.0)
+      mixlib-config (>= 2.2.12, < 3.0)
       mixlib-shellout (~> 2.0)
-    chef-zero (5.3.2)
+      tomlrb (~> 1.2)
+    chef-zero (14.0.6)
       ffi-yajl (~> 2.2)
       hashie (>= 2.0, < 4.0)
-      mixlib-log (~> 1.3)
+      mixlib-log (~> 2.0)
       rack (~> 2.0)
       uuidtools (~> 2.1)
     chefspec (7.2.1)
@@ -171,6 +174,7 @@ GEM
       concurrent-ruby (~> 1.0)
     iniparse (1.4.4)
     ipaddress (0.8.3)
+    iso8601 (0.9.1)
     jmespath (1.3.1)
     json (2.1.0)
     kitchen-docker (2.7.0)
@@ -203,7 +207,7 @@ GEM
     minitest (5.11.3)
     mixlib-archive (0.4.8)
       mixlib-log
-    mixlib-authentication (1.4.2)
+    mixlib-authentication (2.1.1)
     mixlib-cli (1.7.0)
     mixlib-config (2.2.13)
       tomlrb
@@ -211,7 +215,7 @@ GEM
       mixlib-shellout
       mixlib-versioning
       thor
-    mixlib-log (1.7.1)
+    mixlib-log (2.0.4)
     mixlib-shellout (2.4.0)
     mixlib-versioning (1.2.2)
     molinillo (0.6.5)
@@ -238,14 +242,14 @@ GEM
       shellany (~> 0.0)
     octokit (4.8.0)
       sawyer (~> 0.8.0, >= 0.5.3)
-    ohai (8.26.1)
-      chef-config (>= 12.5.0.alpha.1, < 14)
+    ohai (14.3.0)
+      chef-config (>= 12.8, < 15)
       ffi (~> 1.9)
       ffi-yajl (~> 2.2)
       ipaddress
       mixlib-cli
       mixlib-config (~> 2.0)
-      mixlib-log (>= 1.7.1, < 2.0)
+      mixlib-log (~> 2.0, >= 2.0.1)
       mixlib-shellout (~> 2.0)
       plist (~> 3.1)
       systemu (~> 2.6.4)
@@ -392,7 +396,7 @@ PLATFORMS
 DEPENDENCIES
   berkshelf
   bump
-  chef (~> 12)
+  chef (~> 14)
   chef-zero
   chefspec
   foodcritic