diff --git a/plugins/provisioners/salt/bootstrap-salt.ps1 b/plugins/provisioners/salt/bootstrap-salt.ps1
index d85923a12..382e1ff81 100644
--- a/plugins/provisioners/salt/bootstrap-salt.ps1
+++ b/plugins/provisioners/salt/bootstrap-salt.ps1
@@ -1,5 +1,11 @@
-# Salt version to install
-$version = '2014.7.1'
+Param(
+    [string]$version
+)
+ 
+# Salt version to install - default to latest if there is an issue
+if ($version -notmatch "201[0-9]\.[0-9]\.[0-9](\-\d{1})?"){
+  $version = '2015.5.2'
+}
 
 # Create C:\tmp\ - if Vagrant doesn't upload keys and/or config it might not exist
 New-Item C:\tmp\ -ItemType directory -force | out-null
@@ -21,7 +27,7 @@ if ([IntPtr]::Size -eq 4) {
 }
 
 # Download minion setup file
-Write-Host "Downloading Salt minion installer ($arch)..."
+Write-Host "Downloading Salt minion installer $version-$arch..."
 $webclient = New-Object System.Net.WebClient
 $url = "https://docs.saltstack.com/downloads/Salt-Minion-$version-$arch-Setup.exe"
 $file = "C:\tmp\salt.exe"
@@ -64,4 +70,4 @@ if ($service.Status -eq "Stopped") {
   exit 1
 }
 
-Write-Host "Salt minion successfully installed"
+Write-Host "Salt minion successfully installed"
\ No newline at end of file
diff --git a/plugins/provisioners/salt/config.rb b/plugins/provisioners/salt/config.rb
index 12f3d38dd..638a07bfb 100644
--- a/plugins/provisioners/salt/config.rb
+++ b/plugins/provisioners/salt/config.rb
@@ -35,6 +35,7 @@ module VagrantPlugins
       attr_accessor :install_syndic
       attr_accessor :no_minion
       attr_accessor :bootstrap_options
+      attr_accessor :version
 
       def initialize
         @minion_config = UNSET_VALUE
@@ -63,6 +64,7 @@ module VagrantPlugins
         @config_dir = UNSET_VALUE
         @masterless = UNSET_VALUE
         @minion_id = UNSET_VALUE
+        @version = UNSET_VALUE
       end
 
       def finalize!
@@ -90,8 +92,9 @@ module VagrantPlugins
         @no_minion          = nil if @no_minion == UNSET_VALUE
         @bootstrap_options  = nil if @bootstrap_options == UNSET_VALUE
         @config_dir         = nil if @config_dir == UNSET_VALUE
-        @masterless 	    = false if @masterless == UNSET_VALUE
-        @minion_id 	    = nil if @minion_id == UNSET_VALUE
+        @masterless         = false if @masterless == UNSET_VALUE
+        @minion_id          = nil if @minion_id == UNSET_VALUE
+        @version            = nil if @version == UNSET_VALUE
       end
 
       def pillar(data)
diff --git a/plugins/provisioners/salt/provisioner.rb b/plugins/provisioners/salt/provisioner.rb
index 17906d446..62c167b3c 100644
--- a/plugins/provisioners/salt/provisioner.rb
+++ b/plugins/provisioners/salt/provisioner.rb
@@ -76,7 +76,7 @@ module VagrantPlugins
       end
 
       def need_configure
-        @config.minion_config or @config.minion_key or @config.master_config or @config.master_key or @config.grains_config
+        @config.minion_config or @config.minion_key or @config.master_config or @config.master_key or @config.grains_config or @config.version
       end
 
       def need_install
@@ -237,6 +237,9 @@ module VagrantPlugins
 
           bootstrap_path = get_bootstrap
           if @machine.config.vm.communicator == :winrm
+            if @config.version
+              options = "-version %s" % @config.version            
+            end
             bootstrap_destination = File.join(config_dir, "bootstrap_salt.ps1")
           else
             bootstrap_destination = File.join(config_dir, "bootstrap_salt.sh")
@@ -248,7 +251,7 @@ module VagrantPlugins
           @machine.communicate.upload(bootstrap_path.to_s, bootstrap_destination)
           @machine.communicate.sudo("chmod +x %s" % bootstrap_destination)
           if @machine.config.vm.communicator == :winrm
-            bootstrap = @machine.communicate.sudo("powershell.exe -executionpolicy bypass -file %s" % [bootstrap_destination]) do |type, data|
+            bootstrap = @machine.communicate.sudo("powershell.exe -executionpolicy bypass -file %s %s" % [bootstrap_destination, options]) do |type, data|
               if data[0] == "\n"
                 # Remove any leading newline but not whitespace. If we wanted to
                 # remove newlines and whitespace we would have used data.lstrip