diff --git a/README.md b/README.md
index 36cda8c..1aa88a9 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Vagrant.configure("2") do |config|
       # NLM sideband protocol. Without this option, apt-get might hang if it tries
       # to lock files needed for /var/cache/* operations. All of this can be avoided
       # by using NFSv4 everywhere. Please note that the tcp option is not the default.
-      mount_options = ['rw', 'vers=3', 'tcp', 'nolock']
+      mount_options: ['rw', 'vers=3', 'tcp', 'nolock']
     }
     # For more information please check http://docs.vagrantup.com/v2/synced-folders/basic_usage.html
   end
diff --git a/docs/index.md b/docs/index.md
index 4ad4d1c..27151be 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -40,7 +40,7 @@ Vagrant.configure("2") do |config|
       # NLM sideband protocol. Without this option, apt-get might hang if it tries
       # to lock files needed for /var/cache/* operations. All of this can be avoided
       # by using NFSv4 everywhere. Please note that the tcp option is not the default.
-      mount_options = ['rw', 'vers=3', 'tcp', 'nolock']
+      mount_options: ['rw', 'vers=3', 'tcp', 'nolock']
     }
   end
 end
diff --git a/docs/usage.md b/docs/usage.md
index ef4c047..93e9a0b 100644
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -49,7 +49,7 @@ Vagrant.configure("2") do |config|
     # NLM sideband protocol. Without this option, apt-get might hang if it tries
     # to lock files needed for /var/cache/* operations. All of this can be avoided
     # by using NFSv4 everywhere. Please note that the tcp option is not the default.
-    mount_options = ['rw', 'vers=3', 'tcp', 'nolock']
+    mount_options: ['rw', 'vers=3', 'tcp', 'nolock']
   }
 end
 ```