diff --git a/composer.json b/composer.json
index d771415..533dcd4 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
     },
     "require-dev": {
         "blitz-php/coding-standard": "^1.3",
-        "kahlan/kahlan": "^5.2",
+        "kahlan/kahlan": "^5.2 || ^6.0",
         "phpstan/phpstan": "^1.4.7"
     },
     "autoload": {