diff --git a/scripts/lib/install b/scripts/lib/install
index 64b0f0747b..be04368440 100755
--- a/scripts/lib/install
+++ b/scripts/lib/install
@@ -15,8 +15,7 @@ DEPLOYMENT_TYPE="${DEPLOYMENT_TYPE:-voyager}"
 PUPPET_CLASSES="${PUPPET_CLASSES:-zulip::voyager}"
 
 # First, install any updates from the apt repo that may be needed
-wget -O /root/zulip-ppa.asc https://zulip.com/dist/keys/zulip-ppa.asc
-apt-key add /root/zulip-ppa.asc
+wget -qO - https://zulip.com/dist/keys/zulip-ppa.asc | apt-key add -
 cat >/etc/apt/sources.list.d/zulip.list <<EOF
 deb http://ppa.launchpad.net/tabbott/zulip/ubuntu trusty main
 deb-src http://ppa.launchpad.net/tabbott/zulip/ubuntu trusty main