diff --git a/composer.json b/composer.json
index 14204ed..d9fe43e 100644
--- a/composer.json
+++ b/composer.json
@@ -14,15 +14,15 @@
     }
   ],
   "require": {
-    "php": ">=7.1.3",
+    "php": "~7.0",
     "laravel/framework": "5.5.*",
     "zircote/swagger-php": "~2.0|3.*",
     "swagger-api/swagger-ui": "^3.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "7.*",
+    "phpunit/phpunit": "6.*",
     "mockery/mockery": "0.9.*",
-    "orchestra/testbench": "3.6.*",
+    "orchestra/testbench": "3.5.*",
     "satooshi/php-coveralls": "^1.0"
   },
   "autoload": {