diff --git a/README.md b/README.md
index 3016dc8..8858fd6 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ This is a work in progress, and is mostly a means for me to document my current
 
 ### Running a specific set of tagged tasks
 
-You can filter which part of the provisioning process to run by specifying a set of tags using `ansible-playbook`'s `--tags` flag. The tags available are `dotfiles`, `homebrew`, `mas` and `osx`.
+You can filter which part of the provisioning process to run by specifying a set of tags using `ansible-playbook`'s `--tags` flag. The tags available are `dotfiles`, `homebrew`, `mas`, `extra-packages` and `osx`.
 
     ansible-playbook main.yml -i inventory -K --tags "dotfiles,homebrew"
 
@@ -46,6 +46,15 @@ You can override any of the defaults configured in `default.config.yml` by creat
       - { id: 557168941, name: "Tweetbot" }
       - { id: 497799835, name: "Xcode" }
 
+    composer_packages:
+      - hirak/prestissimo
+      - name: drush/drush
+        version: '^8.1'
+
+    gem_packages:
+      - name: bundler
+        state: latest
+
 Any variable can be overridden in `config.yml`; see the supporting roles' documentation for a complete list of available variables.
 
 ## Included Applications / Configuration (Default)