diff --git a/composer.json b/composer.json
index 50fd49c0..cf6eee2e 100644
--- a/composer.json
+++ b/composer.json
@@ -51,6 +51,10 @@
     }
   },
   "config": {
+    "allow-plugins": {
+      "composer/package-versions-deprecated": true,
+      "phpstan/extension-installer": true
+    },
     "platform": {
       "php": "7.2.33"
     },