diff --git a/composer.json b/composer.json
index a2e4b2f..45e1627 100755
--- a/composer.json
+++ b/composer.json
@@ -10,12 +10,12 @@
     "sender"
   ],
   "require": {
-    "php": "^7.1.3",
-    "monolog/monolog": "^1.23",
-    "robinvdvleuten/ulid": "^3.0"
+    "php": "^7.3",
+    "monolog/monolog": "^2.0",
+    "robinvdvleuten/ulid": "^4.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^7.0"
+    "phpunit/phpunit": "^8.5"
   },
   "suggest": {
     "aws/aws-sdk-php": "^3.0",