diff --git a/composer.json b/composer.json
index 0846f6b..a8e3e66 100644
--- a/composer.json
+++ b/composer.json
@@ -33,14 +33,13 @@
             "role": "Developer"
         }
     ],
-    "require": {
-    },
+    "require": [],
     "require-dev": {
-        "phpunit/phpunit": "~5.3",
+        "phpunit/phpunit": "^9.5.10",
         "scrutinizer/ocular": "^1.1",
-        "guzzlehttp/guzzle": "^6.2",
-        "squizlabs/php_codesniffer": "^2.3",
-        "vlucas/phpdotenv": "^2.2"
+        "guzzlehttp/guzzle": "^7.2",
+        "squizlabs/php_codesniffer": "^3.6",
+        "vlucas/phpdotenv": "^5.4"
     },
     "autoload": {
         "psr-4": {