diff --git a/composer.json b/composer.json
index 996b2a0..b72cdba 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,6 @@
     "description": "Laravel wrapper for the Coinbase Commerce API",
     "keywords": [
         "laravel",
-        "laravel 5",
         "coinbase",
         "coinbase commerce"
     ],
@@ -15,11 +14,12 @@
         }
     ],
     "require": {
-        "guzzlehttp/guzzle": "~6.0"
+        "php": "^7.3|^8.0",
+        "guzzlehttp/guzzle": "^7.0.1"
     },
     "require-dev": {
-        "phpunit/phpunit": "~6.0",
-        "orchestra/testbench": "~3.0"
+        "phpunit/phpunit": "^9.3.3",
+        "orchestra/testbench": "^6.0.0"
     },
     "autoload": {
         "psr-4": {