diff --git a/resources/phpstan.json b/resources/phpstan.json
index 8c8892e4..ee662dd9 100644
--- a/resources/phpstan.json
+++ b/resources/phpstan.json
@@ -27,6 +27,19 @@
             "test": "composer global bin phpstan show phpstan/phpstan-deprecation-rules",
             "tags": ["phpstan"]
         },
+        {
+            "name": "phpstan-extension-installer",
+            "summary": "Composer plugin for automatic installation of PHPStan extensions.",
+            "website": "https://github.com/phpstan/extension-installer",
+            "command": {
+                "composer-bin-plugin": {
+                    "package": "phpstan/extension-installer",
+                    "namespace": "phpstan"
+                }
+            },
+            "test": "composer global bin phpstan show phpstan/extension-installer",
+            "tags": ["phpstan"]
+        },
         {
             "name": "phpstan-ergebnis-rules",
             "summary": "Additional rules for PHPstan",