diff --git a/composer.json b/composer.json
index f58b2ea..c68ed56 100644
--- a/composer.json
+++ b/composer.json
@@ -6,8 +6,8 @@
     "ext-curl": "*"
   },
   "require-dev": {
-    "squizlabs/php_codesniffer": "^3.4",
-    "phpunit/phpunit": "^5"
+    "squizlabs/php_codesniffer": "^3.5",
+    "phpunit/phpunit": "^8"
   },
   "license": "MIT",
   "authors": [