diff --git a/composer.json b/composer.json
index 4b51dc9..d50157c 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
         "php": "^7.2 || ^8.0"
     },
     "require-dev": {
-        "phpstan/phpstan": "^0.12.8"
+        "phpstan/phpstan": "^0.12.8 || ^1.0.0"
     },
     "autoload": {
         "classmap": ["./src"]