diff --git a/composer.json b/composer.json
index d1caa60..a8df10d 100644
--- a/composer.json
+++ b/composer.json
@@ -38,7 +38,7 @@
 		"php-http/guzzle7-adapter": "^0.1.1 || ^1.0.0",
 		"php-http/mock-client": "^1.2",
 		"phpcompatibility/php-compatibility": "^9.3",
-		"phpstan/phpstan": "^0.12.65",
+		"phpstan/phpstan": "^0.12.65 || ^1.0.0",
 		"phpunit/phpunit": "^7.0 | ^8.0 | ^9.0",
 		"slevomat/coding-standard": "^6.3 || ^7.0",
 		"squizlabs/php_codesniffer": "^3.3"