diff --git a/common.nix b/common.nix
index cbc0fc9..a82e7a0 100644
--- a/common.nix
+++ b/common.nix
@@ -13,6 +13,10 @@
   # setup magicdns for tailscale
   networking.nameservers = ["100.100.100.100" "1.1.1.1" "8.8.8.8"];
   networking.search = ["hummingbird-stork.ts.net"];
+  networking.firewall.allowedUDPPorts = [
+    # tailscale magicdns
+    53
+  ];
 
   # Set your time zone.
   time.timeZone = "Europe/Paris";