diff --git a/code/SiteConfig.php b/code/SiteConfig.php
index e7e99adb4..39fe4dcb3 100644
--- a/code/SiteConfig.php
+++ b/code/SiteConfig.php
@@ -36,6 +36,9 @@
  * @method ManyManyList<Group> CreateTopLevelGroups()
  * @method ManyManyList<Group> EditorGroups()
  * @method ManyManyList<Group> ViewerGroups()
+ * @method ManyManyList<Member> CreateTopLevelMembers()
+ * @method ManyManyList<Member> EditorMembers()
+ * @method ManyManyList<Member> ViewerMembers()
  */
 class SiteConfig extends DataObject implements PermissionProvider, TemplateGlobalProvider
 {
diff --git a/composer.json b/composer.json
index 928bc1c1e..2f8d7bed4 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,9 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.6",
-        "squizlabs/php_codesniffer": "^3.7"
+        "squizlabs/php_codesniffer": "^3.7",
+        "silverstripe/standards": "^1",
+        "phpstan/extension-installer": "^1.3"
     },
     "autoload": {
         "psr-4": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 000000000..d10aea03b
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,3 @@
+parameters:
+  paths:
+    - code