diff --git a/cluster/images/hyperkube/Dockerfile b/cluster/images/hyperkube/Dockerfile
index b0794a9f517..380da38ea1b 100644
--- a/cluster/images/hyperkube/Dockerfile
+++ b/cluster/images/hyperkube/Dockerfile
@@ -1,7 +1,7 @@
 FROM google/debian:wheezy
 
 RUN apt-get update
-RUN apt-get -yy -q install iptables
+RUN apt-get -yy -q install iptables ca-certificates
 COPY hyperkube /hyperkube
 RUN chmod a+rx /hyperkube