diff --git a/modules/nginx-port-forward/default.nix b/modules/nginx-port-forward/default.nix
index 7a13859..014543f 100644
--- a/modules/nginx-port-forward/default.nix
+++ b/modules/nginx-port-forward/default.nix
@@ -9,7 +9,7 @@ let
 
   mkServerBlock = isUDP: port: forward: ''
     server {
-      resolver 127.0.0.53 ipv4=off;
+      resolver 127.0.0.53 ipv4=off valid=30s;
 
       listen ${port}${optionalString isUDP " udp"}${optionalString (forward.certName != null) " ssl"};
       listen [::]:${port}${optionalString isUDP " udp"}${optionalString (forward.certName != null) " ssl"};