diff --git a/docker/base/sources.list.ubuntu b/docker/base/sources.list.ubuntu
index 144104d07e..cac2299544 100644
--- a/docker/base/sources.list.ubuntu
+++ b/docker/base/sources.list.ubuntu
@@ -10,7 +10,7 @@ deb http://archive.ubuntu.com/ubuntu/ bionic-backports main universe
 
 # We need to add the repo for the updated packages they provide. The main ones
 # are qemu, libvirt, and openvswitch.
-deb http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/train main
+deb http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/ussuri main
 
 # NOTE(hrw): repositories below are added into image when they are needed as
 # separate files in /etc/apt/sources.list.d/ directory. For that purpose they
diff --git a/docker/base/sources.list.ubuntu.aarch64 b/docker/base/sources.list.ubuntu.aarch64
index 41a7fb1ea6..cb18d4dcd8 100644
--- a/docker/base/sources.list.ubuntu.aarch64
+++ b/docker/base/sources.list.ubuntu.aarch64
@@ -8,7 +8,7 @@ deb http://ports.ubuntu.com/ bionic-backports main universe
 
 # We need to add the repo for the updated packages they provide. The main ones
 # are qemu, libvirt, and openvswitch.
-deb http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/train main
+deb http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/ussuri main
 
 # NOTE(hrw): repositories below are added into image when they are needed as
 # separate files in /etc/apt/sources.list.d/ directory. For that purpose they
diff --git a/docker/base/sources.list.ubuntu.ppc64le b/docker/base/sources.list.ubuntu.ppc64le
index 99a4d4b5b0..6500d7bd34 100644
--- a/docker/base/sources.list.ubuntu.ppc64le
+++ b/docker/base/sources.list.ubuntu.ppc64le
@@ -8,7 +8,7 @@ deb http://ports.ubuntu.com/ bionic-backports main universe
 
 # We need to add the repo for the updated packages they provide. The main ones
 # are qemu, libvirt, and openvswitch.
-deb http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/train main
+deb http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/ussuri main
 
 # NOTE(hrw): repositories below are added into image when they are needed as
 # separate files in /etc/apt/sources.list.d/ directory. For that purpose they