diff --git a/composer.json b/composer.json
index 0cadd16..850bfee 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     },
     "require-dev": {
         "orchestra/testbench": "^7.5|^8.0",
-        "phpunit/phpunit": "^10.5"
+        "phpunit/phpunit": "^9.5"
     },
     "autoload": {
         "psr-4": {