Update composer.json

prolic · web-flow · commit 45ddc088e29c · 2018-03-27T00:25:52.000+08:00
diff --git a/composer.json b/composer.json
@@ -11,7 +11,7 @@
         "psr-15"
     ],
     "require": {
-        "php": ">=7",
+        "php": "^7.1",
         "psr/http-server-handler": "^1.0",
         "psr/http-server-middleware": "^1.0",
         "maximebf/debugbar": "^1.15",
