diff --git a/plugins/provisioners/chef/config/base.rb b/plugins/provisioners/chef/config/base.rb
index 71d8a50e8..1ee8bca0a 100644
--- a/plugins/provisioners/chef/config/base.rb
+++ b/plugins/provisioners/chef/config/base.rb
@@ -15,23 +15,51 @@ module VagrantPlugins
         # @return [String]
         attr_accessor :binary_env
 
+        # Install Chef on the system if it does not exist. Default is true.
+        # This is a trinary attribute (it can have three values):
+        #
+        # - true (bool) install Chef
+        # - false (bool) do not install Chef
+        # - "force" (string) install Chef, even if it is already installed at
+        #   the proper version
+        #
+        # @return [true, false, String]
+        attr_accessor :install
+
         # The Chef log level. See the Chef docs for acceptable values.
         # @return [String, Symbol]
         attr_accessor :log_level
 
+        # The version of Chef to install. If Chef is already installed on the
+        # system, the installed version is compared with the requested version.
+        # If they match, no action is taken. If they do not match, version of
+        # the value specified in this attribute will be installed over top of
+        # the existing version (a warning will be displayed).
+        #
+        # You can also specify "latest" (default), which will install the latest
+        # version of Chef on the system. In this case, Chef will use whatever
+        # version is on the system. To force the newest version of Chef to be
+        # installed on every provision, set the {#install} option to "force".
+        #
+        # @return [String]
+        attr_accessor :version
 
         def initialize
           super
 
           @binary_path      = UNSET_VALUE
           @binary_env       = UNSET_VALUE
+          @install          = UNSET_VALUE
           @log_level        = UNSET_VALUE
+          @version          = UNSET_VALUE
         end
 
         def finalize!
           @binary_path      = nil     if @binary_path == UNSET_VALUE
           @binary_env       = nil     if @binary_env == UNSET_VALUE
+          @install          = true    if @install == UNSET_VALUE
           @log_level        = :info   if @log_level == UNSET_VALUE
+          @version          = :latest if @version == UNSET_VALUE
 
           # Make sure the version is a symbol if it's not a boolean
           if @version.respond_to?(:to_sym)