diff --git a/playbook.yml b/playbook.yml
index eca347f..8ed767d 100644
--- a/playbook.yml
+++ b/playbook.yml
@@ -11,8 +11,8 @@
         state: directory
 
   roles:
-    - { role: geerlingguy.homebrew, tags: brew }
-    - { role: geerlingguy.dotfiles, tags: dotfiles }
-    - { role: opdavies.sculpin, tags: sculpin }
-    - { role: geerlingguy.ruby, tags: ruby }
-    - { role: geerlingguy.nodejs, tags: node }
+    - { role: geerlingguy.homebrew, tags: ['brew'] }
+    - { role: geerlingguy.dotfiles, tags: ['dotfiles'] }
+    - { role: opdavies.sculpin, tags: ['sculpin'] }
+    - { role: geerlingguy.ruby, tags: ['ruby'] }
+    - { role: geerlingguy.nodejs, tags: ['node'] }