diff --git a/composer.json b/composer.json
index 5a0a85125..740d641f1 100644
--- a/composer.json
+++ b/composer.json
@@ -54,7 +54,7 @@
         "phpunit/phpunit": "^5.7",
         "silverstripe/versioned": "^1@dev",
         "silverstripe/behat-extension": "^3",
-        "silverstripe/serve": "dev-master",
+        "silverstripe/serve": "^2@dev",
         "se/selenium-server-standalone": "2.41.0"
     },
     "provide": {
diff --git a/docs/en/02_Developer_Guides/15_Customising_the_Admin_Interface/02_CMS_Architecture.md b/docs/en/02_Developer_Guides/15_Customising_the_Admin_Interface/02_CMS_Architecture.md
index 2bd5bf72c..d2c4cec33 100644
--- a/docs/en/02_Developer_Guides/15_Customising_the_Admin_Interface/02_CMS_Architecture.md
+++ b/docs/en/02_Developer_Guides/15_Customising_the_Admin_Interface/02_CMS_Architecture.md
@@ -41,7 +41,7 @@ Check our [build tooling](/contributing/build_tooling) docs for more details.
 
 
 ```
-(cd framework && yarn run build && yarn run css)
+cd vendor/silverstripe/admin && yarn build
 ```
 
 ## Coding Conventions
@@ -50,6 +50,21 @@ Please follow our [CSS](/contributing/css_coding_conventions)
 and [JavaScript](/contributing/javascript_coding_conventions)
 coding conventions.
 
+
+## Pattern library
+
+A pattern library is a collection of user interface design elements, this helps developers and designers collaborate and to provide a quick preview of elements as they were intended without the need to build an entire interface to see it.
+Components built in React and used by the CMS are actively being added to the pattern library.
+
+To access the pattern library, starting from your project root:
+
+```
+cd vendor/silverstripe/admin && yarn pattern-lib
+```
+
+Then browse to `http://localhost:6006/`
+
+
 ## The Admin URL
 
 The CMS interface can be accessed by default through the `admin/` URL. You can change this by setting your own [Director routing rule](director#routing-rules) to the `[AdminRootController](api:SilverStripe\Admin\AdminRootController)` and clear the old rule like in the example below.