diff --git a/cluster/addons/dns/skydns-rc.yaml.in b/cluster/addons/dns/skydns-rc.yaml.in
index f4bc5cf080c..072162d1dea 100644
--- a/cluster/addons/dns/skydns-rc.yaml.in
+++ b/cluster/addons/dns/skydns-rc.yaml.in
@@ -48,6 +48,9 @@ spec:
         - containerPort: 53
           name: dns
           protocol: UDP
+        - containerPort: 53
+          name: dns-tcp
+          protocol: TCP
         livenessProbe:
           exec:
             command: