diff --git a/symfony/framework-bundle/4.2/manifest.json b/symfony/framework-bundle/4.2/manifest.json
index ea46c0b0..8cdbc68d 100644
--- a/symfony/framework-bundle/4.2/manifest.json
+++ b/symfony/framework-bundle/4.2/manifest.json
@@ -14,7 +14,7 @@
     "env": {
         "APP_ENV": "dev",
         "APP_SECRET": "%generate(secret)%",
-        "#TRUSTED_PROXIES": "127.0.0.1,127.0.0.2",
+        "#TRUSTED_PROXIES": "127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16",
         "#TRUSTED_HOSTS": "'^localhost|example\\.com$'"
     },
     "gitignore": [