diff --git a/code/Model/SiteTree.php b/code/Model/SiteTree.php
index 7891be26ff..75437496fb 100755
--- a/code/Model/SiteTree.php
+++ b/code/Model/SiteTree.php
@@ -110,7 +110,6 @@
  * @mixin FileLinkTracking Added via filetracking.yml in silverstripe/assets
  * @mixin InheritedPermissionsExtension
  * @method HasManyList<SiteTreeLink> BackLinks()
- * @method HasManyList<VirtualPage> VirtualPages()
  */
 class SiteTree extends DataObject implements PermissionProvider, i18nEntityProvider, CMSPreviewable, Resettable, Flushable, MemberCacheFlusher
 {
diff --git a/composer.json b/composer.json
index 77464ade39..b274b1073b 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,9 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.6",
-        "squizlabs/php_codesniffer": "^3.7"
+        "squizlabs/php_codesniffer": "^3.7",
+        "silverstripe/standards": "^1",
+        "phpstan/extension-installer": "^1.3"
     },
     "extra": {
         "expose": [
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
new file mode 100644
index 0000000000..d10aea03bb
--- /dev/null
+++ b/phpstan.neon.dist
@@ -0,0 +1,3 @@
+parameters:
+  paths:
+    - code