diff --git a/manifests/site.pp b/manifests/site.pp
index c6b70c9e2f..07a141612e 100644
--- a/manifests/site.pp
+++ b/manifests/site.pp
@@ -1298,7 +1298,7 @@ node /^ze\d+\.openstack\.org$/ {
   }
 
   class { '::zuul::known_hosts':
-    known_hosts_content => "review.openstack.org,104.130.246.32,2001:4800:7819:103:be76:4eff:fe04:9229 ${gerrit_ssh_host_key}\ngit.opendaylight.org,52.35.122.251,2600:1f14:421:f500:7b21:2a58:ab0a:2d17 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyRXyHEw/P1iZr/fFFzbodT5orVV/ftnNRW59Zh9rnSY5Rmbc9aygsZHdtiWBERVVv8atrJSdZool75AglPDDYtPICUGWLR91YBSDcZwReh5S9es1dlQ6fyWTnv9QggSZ98KTQEuE3t/b5SfH0T6tXWmrNydv4J2/mejKRRLU2+oumbeVN1yB+8Uau/3w9/K5F5LgsDDzLkW35djLhPV8r0OfmxV/cAnLl7AaZlaqcJMA+2rGKqM3m3Yu+pQw4pxOfCSpejlAwL6c8tA9naOvBkuJk+hYpg5tDEq2QFGRX5y1F9xQpwpdzZROc5hdGYntM79VMMXTj+95dwVv/8yTsw==",
+    known_hosts_content => "[review.openstack.org]:29418,[104.130.246.32]:29418,[2001:4800:7819:103:be76:4eff:fe04:9229]:29418 ${gerrit_ssh_host_key}\n[git.opendaylight.org]:29418,[52.35.122.251]:29418,[2600:1f14:421:f500:7b21:2a58:ab0a:2d17]:29418 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyRXyHEw/P1iZr/fFFzbodT5orVV/ftnNRW59Zh9rnSY5Rmbc9aygsZHdtiWBERVVv8atrJSdZool75AglPDDYtPICUGWLR91YBSDcZwReh5S9es1dlQ6fyWTnv9QggSZ98KTQEuE3t/b5SfH0T6tXWmrNydv4J2/mejKRRLU2+oumbeVN1yB+8Uau/3w9/K5F5LgsDDzLkW35djLhPV8r0OfmxV/cAnLl7AaZlaqcJMA+2rGKqM3m3Yu+pQw4pxOfCSpejlAwL6c8tA9naOvBkuJk+hYpg5tDEq2QFGRX5y1F9xQpwpdzZROc5hdGYntM79VMMXTj+95dwVv/8yTsw==\n",
   }
 }
 
@@ -1402,7 +1402,7 @@ node /^zuul\d+\.openstack\.org$/ {
   class { '::zuul::fingergw': }
 
   class { '::zuul::known_hosts':
-    known_hosts_content => "review.openstack.org,104.130.246.32,2001:4800:7819:103:be76:4eff:fe04:9229 ${gerrit_ssh_host_key}\ngit.opendaylight.org,52.35.122.251,2600:1f14:421:f500:7b21:2a58:ab0a:2d17 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyRXyHEw/P1iZr/fFFzbodT5orVV/ftnNRW59Zh9rnSY5Rmbc9aygsZHdtiWBERVVv8atrJSdZool75AglPDDYtPICUGWLR91YBSDcZwReh5S9es1dlQ6fyWTnv9QggSZ98KTQEuE3t/b5SfH0T6tXWmrNydv4J2/mejKRRLU2+oumbeVN1yB+8Uau/3w9/K5F5LgsDDzLkW35djLhPV8r0OfmxV/cAnLl7AaZlaqcJMA+2rGKqM3m3Yu+pQw4pxOfCSpejlAwL6c8tA9naOvBkuJk+hYpg5tDEq2QFGRX5y1F9xQpwpdzZROc5hdGYntM79VMMXTj+95dwVv/8yTsw==",
+    known_hosts_content => "[review.openstack.org]:29418,[104.130.246.32]:29418,[2001:4800:7819:103:be76:4eff:fe04:9229]:29418 ${gerrit_ssh_host_key}\n[git.opendaylight.org]:29418,[52.35.122.251]:29418,[2600:1f14:421:f500:7b21:2a58:ab0a:2d17]:29418 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyRXyHEw/P1iZr/fFFzbodT5orVV/ftnNRW59Zh9rnSY5Rmbc9aygsZHdtiWBERVVv8atrJSdZool75AglPDDYtPICUGWLR91YBSDcZwReh5S9es1dlQ6fyWTnv9QggSZ98KTQEuE3t/b5SfH0T6tXWmrNydv4J2/mejKRRLU2+oumbeVN1yB+8Uau/3w9/K5F5LgsDDzLkW35djLhPV8r0OfmxV/cAnLl7AaZlaqcJMA+2rGKqM3m3Yu+pQw4pxOfCSpejlAwL6c8tA9naOvBkuJk+hYpg5tDEq2QFGRX5y1F9xQpwpdzZROc5hdGYntM79VMMXTj+95dwVv/8yTsw==\n",
   }
 
   include bup
diff --git a/modules/openstack_project/manifests/zuul_merger.pp b/modules/openstack_project/manifests/zuul_merger.pp
index 05b2c56f22..86a2ee5d43 100644
--- a/modules/openstack_project/manifests/zuul_merger.pp
+++ b/modules/openstack_project/manifests/zuul_merger.pp
@@ -18,7 +18,7 @@ class openstack_project::zuul_merger(
     gearman_server           => $gearman_server,
     gerrit_server            => $gerrit_server,
     gerrit_user              => $gerrit_user,
-    known_hosts_content      => "review.openstack.org,104.130.246.32,2001:4800:7819:103:be76:4eff:fe04:9229 ${gerrit_ssh_host_key}\ngit.opendaylight.org,52.35.122.251,2600:1f14:421:f500:7b21:2a58:ab0a:2d17 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyRXyHEw/P1iZr/fFFzbodT5orVV/ftnNRW59Zh9rnSY5Rmbc9aygsZHdtiWBERVVv8atrJSdZool75AglPDDYtPICUGWLR91YBSDcZwReh5S9es1dlQ6fyWTnv9QggSZ98KTQEuE3t/b5SfH0T6tXWmrNydv4J2/mejKRRLU2+oumbeVN1yB+8Uau/3w9/K5F5LgsDDzLkW35djLhPV8r0OfmxV/cAnLl7AaZlaqcJMA+2rGKqM3m3Yu+pQw4pxOfCSpejlAwL6c8tA9naOvBkuJk+hYpg5tDEq2QFGRX5y1F9xQpwpdzZROc5hdGYntM79VMMXTj+95dwVv/8yTsw==",
+    known_hosts_content      => "[review.openstack.org]:29418,[104.130.246.32]:29418,[2001:4800:7819:103:be76:4eff:fe04:9229]:29418 ${gerrit_ssh_host_key}\n[git.opendaylight.org]:29418,[52.35.122.251]:29418,[2600:1f14:421:f500:7b21:2a58:ab0a:2d17]:29418 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAyRXyHEw/P1iZr/fFFzbodT5orVV/ftnNRW59Zh9rnSY5Rmbc9aygsZHdtiWBERVVv8atrJSdZool75AglPDDYtPICUGWLR91YBSDcZwReh5S9es1dlQ6fyWTnv9QggSZ98KTQEuE3t/b5SfH0T6tXWmrNydv4J2/mejKRRLU2+oumbeVN1yB+8Uau/3w9/K5F5LgsDDzLkW35djLhPV8r0OfmxV/cAnLl7AaZlaqcJMA+2rGKqM3m3Yu+pQw4pxOfCSpejlAwL6c8tA9naOvBkuJk+hYpg5tDEq2QFGRX5y1F9xQpwpdzZROc5hdGYntM79VMMXTj+95dwVv/8yTsw==\n",
     zuul_ssh_private_key     => $zuul_ssh_private_key,
     zuul_url                 => $zuul_url,
     git_email                => $git_email,