diff --git a/server/index.js b/server/index.js
index e0ff7c97..4decef5a 100644
--- a/server/index.js
+++ b/server/index.js
@@ -238,7 +238,8 @@ const io = new Server(httpServer, {
         origin.startsWith('http://localhost:') ||
         origin.startsWith('http://127.0.0.1:') ||
         origin.startsWith('http://[::1]:') ||
-        origin.startsWith('http://100.');
+        origin.startsWith('http://100.') ||
+        origin.startsWith('http://172.');
 
       if (allowed) {
         callback(null, true);