diff --git a/composer.json b/composer.json
index 8dcfc9ec..8d9b96b4 100644
--- a/composer.json
+++ b/composer.json
@@ -27,7 +27,8 @@
     "psr/container": "^2.0",
     "psr/http-server-middleware": "1.0.1",
     "ext-pcntl": "*",
-    "ext-sockets": "*"
+    "ext-sockets": "*",
+    "nikic/php-parser": "^4.15"
   },
   "replace": {
     "symfony/polyfill-apcu": "*",