diff --git a/unbound.conf b/unbound.conf
index 96a2332..d063c76 100644
--- a/unbound.conf
+++ b/unbound.conf
@@ -1,4 +1,5 @@
 server:
+    interface: ::1
     trust-anchor-file: /etc/unbound/trusted-key.key
     tls-cert-bundle: /etc/ssl/certs/ca-certificates.crt
     prefetch: yes