diff --git a/composer.json b/composer.json
index 77b0481..169872f 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
         "guzzlehttp/guzzle": "^7.7",
         "guzzlehttp/psr7": "^2.5",
         "letsdrink/ouzo-goodies": "dev-master",
-        "nikic/php-parser": "^4.16",
+        "nikic/php-parser": "^4.16 || ^5.0",
         "phpdocumentor/reflection-docblock": "^5.3",
         "psr/http-message": "^2.0",
         "rawr/t-regx": "^0.41",