diff --git a/composer.json b/composer.json
index 1579358..5bba74e 100644
--- a/composer.json
+++ b/composer.json
@@ -26,10 +26,10 @@
     }
   ],
   "require": {
-    "php": "^7.0",
+    "php": "^7.1",
     "ext-sockets": "*"
   },
   "require-dev": {
-    "phpunit/phpunit": "^6.0"
+    "phpunit/phpunit": "^7.0"
   }
 }