diff --git a/conf.d/global.conf b/conf.d/global.conf
index 09e07032507d25a4ac7b0b93650e1cdefd686d37..02ef4dab7bb5ea89d4d29a0998cde31871832ef6 100644
--- a/conf.d/global.conf
+++ b/conf.d/global.conf
@@ -1,5 +1,5 @@
 # The resolver for the Docker network.
-resolver        127.0.0.11;
+resolver        127.0.0.11 valid=30s;
 gzip            on;
 tcp_nopush      on;
 tcp_nodelay     on;