diff --git a/composer.json b/composer.json
index 5778d10..3b9d1eb 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,8 @@
         "ext-openssl": "*"
     },
     "require-dev": {
-        "phpstan/phpstan": "^1.5.3"
+        "phpstan/phpstan": "^1.5.3",
+        "phpstan/phpdoc-parser": "<2"
     },
     "autoload": {
         "psr-4": {