diff --git a/composer.json b/composer.json
index 1c6dd92..4cf98b4 100644
--- a/composer.json
+++ b/composer.json
@@ -7,13 +7,13 @@
     "license": "LGPL-3.0-only",
     "require": {
         "php": ">=5.5.9",
-        "guzzlehttp/guzzle": "~6.0",
+        "guzzlehttp/guzzle": "^6.0 || ^7.0",
         "fzaninotto/faker": "^1.6"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.7",
         "fzaninotto/faker": "^1.6",
-        "satooshi/php-coveralls": "^2.0"
+        "php-coveralls/php-coveralls": "^2"
     },
     "autoload": {
         "psr-4": {