diff --git a/lib/mrsk/cli/server.rb b/lib/mrsk/cli/server.rb
index d6ae074a..39861ec2 100644
--- a/lib/mrsk/cli/server.rb
+++ b/lib/mrsk/cli/server.rb
@@ -2,13 +2,13 @@ class Mrsk::Cli::Server < Mrsk::Cli::Base
   desc "bootstrap", "Ensure curl and Docker are installed on servers"
   def bootstrap
     on(MRSK.hosts + MRSK.accessory_hosts) do
-      dependencies_to_install = [].tap do |dependencies|
+      dependencies_to_install = Array.new.tap do |dependencies|
         dependencies << "curl" unless execute "which curl", raise_on_non_zero_exit: false
         dependencies << "docker.io" unless execute "which docker", raise_on_non_zero_exit: false
       end
 
       if dependencies_to_install.any?
-        execute "apt-get update -y && apt-get install #{dependencies_to_install.join(' ')} -y)"
+        execute "apt-get update -y && apt-get install #{dependencies_to_install.join(" ")} -y)"
       end
     end
   end