diff --git a/orchestration/Vagrantfile b/orchestration/Vagrantfile
index 87881891..43efc793 100644
--- a/orchestration/Vagrantfile
+++ b/orchestration/Vagrantfile
@@ -16,18 +16,18 @@ Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   # Application server 1.
   config.vm.define "app1" do |app|
     app.vm.hostname = "orc-app1.test"
-    app.vm.network :private_network, ip: "192.168.60.4"
+    app.vm.network "private_network", ip: "192.168.60.4"
   end
 
   # Application server 2.
   config.vm.define "app2" do |app|
     app.vm.hostname = "orc-app2.test"
-    app.vm.network :private_network, ip: "192.168.60.5"
+    app.vm.network "private_network", ip: "192.168.60.5"
   end
 
   # Database server.
   config.vm.define "db" do |db|
     db.vm.hostname = "orc-db.test"
-    db.vm.network :private_network, ip: "192.168.60.6"
+    db.vm.network "private_network", ip: "192.168.60.6"
   end
 end