diff --git a/hosts/sid/services/coredns.nix b/hosts/sid/services/coredns.nix
index 16d1ed2..df9b3bb 100644
--- a/hosts/sid/services/coredns.nix
+++ b/hosts/sid/services/coredns.nix
@@ -29,4 +29,7 @@
       }
     '';
   };
+
+  networking.firewall.allowedUDPPorts = [ 53 ];
+  networking.firewall.allowedTCPPorts = [ 53 ];
 }