diff --git a/composer.json b/composer.json
index c02e137..5b608e6 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "require-dev": {
         "phpunit/phpunit": "~8.0||~9.0",
         "mockery/mockery": "^1.0",
-        "orchestra/testbench": "^3.4|^4.0|^5.0|^6.0"
+        "orchestra/testbench": "^4.0|^5.0|^6.0"
     },
     "autoload": {
         "psr-4": {