Update composer.json

Author: pascalbaljet

composer.json

@@ -18,12 +18,12 @@
     ],
     "require": {
         "php" : "~5.6|^7.0",
-        "illuminate/filesystem": "5.0.* || 5.1.* || 5.2.* || 5.3.* || 5.4.* || 5.5.* || 5.6.*",
+        "illuminate/filesystem": "5.0.* || 5.1.* || 5.2.* || 5.3.* || 5.4.* || 5.5.* || 5.6.* || 5.7.*",
         "league/flysystem-webdav": "^1.0"
     },
     "require-dev": {
         "orchestra/testbench": "^3.0",
-        "phpunit/phpunit": "~5.0|~6.0"
+        "phpunit/phpunit": "~5.0|~6.0|~7.0"
     },
     "autoload": {
         "psr-4": {