diff --git a/docker/base/Dockerfile.j2 b/docker/base/Dockerfile.j2
index b3c923b3f2..8f2ec86343 100644
--- a/docker/base/Dockerfile.j2
+++ b/docker/base/Dockerfile.j2
@@ -347,6 +347,7 @@ COPY apt_preferences.{{ base_distro }} /etc/apt/preferences
     {# 4D8EB5FDA37AB55F41A135203BF88A0C6A770882 -- Apache Qpid PPA Signing Key <dev@qpid.apache.org> #}
     {# 901F9177AB97ACBE                         -- Treasure Data, Inc (Treasure Agent Official Signing key) <support@treasure-data.com> #}
     {# A20F259AEB9C94BB                         -- Sensuapp (Freight) <support@hw-ops.com> #}
+    {# F1656F24C74CD1D8                         -- MariaDB Signing Key <signing-key@mariadb.org> #}
     {% set base_apt_keys = [
       '391A9AA2147192839E9DB0315EDB1B62EC4926EA',
       '46095ACC8548582C1A2699A9D27D666CD88E42B4',
@@ -355,7 +356,8 @@ COPY apt_preferences.{{ base_distro }} /etc/apt/preferences
       '58118E89F3A912897C070ADBF76221572C52609D',
       '4D8EB5FDA37AB55F41A135203BF88A0C6A770882',
       '901F9177AB97ACBE',
-      'A20F259AEB9C94BB'
+      'A20F259AEB9C94BB',
+      'F1656F24C74CD1D8',
     ] %}
     {% set remote_apt_keys = [
       'https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey',
diff --git a/docker/base/sources.list.ubuntu b/docker/base/sources.list.ubuntu
index 0e418a496b..3ffe3449b5 100644
--- a/docker/base/sources.list.ubuntu
+++ b/docker/base/sources.list.ubuntu
@@ -39,3 +39,6 @@ deb https://packagecloud.io/rabbitmq/rabbitmq-server/ubuntu/ bionic main
 # Percona XtraBackup repo
 # NOTE(yoctozepto): enabled only in the xtrabackup image (to spare MariaDB deps and allow Zuul override)
 #deb http://repo.percona.com/apt bionic main
+
+# MariaDB repo
+deb http://downloads.mariadb.com/MariaDB/mariadb-10.3/repo/ubuntu bionic main
diff --git a/docker/base/sources.list.ubuntu.aarch64 b/docker/base/sources.list.ubuntu.aarch64
index ae29f5b897..7169349c10 100644
--- a/docker/base/sources.list.ubuntu.aarch64
+++ b/docker/base/sources.list.ubuntu.aarch64
@@ -18,3 +18,6 @@ deb https://packages.grafana.com/oss/deb stable main
 
 # elasticsearch (arch:all), logstash (arch:all), kibana (arch:amd64)
 deb [arch=amd64] https://artifacts.elastic.co/packages/5.x/apt stable main
+
+# MariaDB repo
+deb [arch=arm64] http://downloads.mariadb.com/MariaDB/mariadb-10.3/repo/ubuntu bionic main
diff --git a/docker/base/sources.list.ubuntu.ppc64le b/docker/base/sources.list.ubuntu.ppc64le
index 130d0a15d5..5ffe6e48e9 100644
--- a/docker/base/sources.list.ubuntu.ppc64le
+++ b/docker/base/sources.list.ubuntu.ppc64le
@@ -12,3 +12,6 @@ deb http://ubuntu-cloud.archive.canonical.com/ubuntu bionic-updates/train main
 
 # rabbitmq repo
 deb https://packagecloud.io/rabbitmq/rabbitmq-server/ubuntu/ bionic main
+
+# MariaDB repo
+deb [arch=ppc64el] http://downloads.mariadb.com/MariaDB/mariadb-10.3/repo/ubuntu bionic main
diff --git a/docker/mariadb/Dockerfile.j2 b/docker/mariadb/Dockerfile.j2
index 4e2f57f489..55898dc18e 100644
--- a/docker/mariadb/Dockerfile.j2
+++ b/docker/mariadb/Dockerfile.j2
@@ -32,7 +32,8 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
     {% else %}
         {% set mariadb_packages = mariadb_packages + [
             'mariadb-server',
-            'mariadb-client'
+            'mariadb-client',
+            'mariadb-backup',
         ] %}
     {% endif %}
 {% endif %}
diff --git a/releasenotes/notes/ubuntu-upstream-mariadb-34ce8106811a1f75.yaml b/releasenotes/notes/ubuntu-upstream-mariadb-34ce8106811a1f75.yaml
new file mode 100644
index 0000000000..252f49014e
--- /dev/null
+++ b/releasenotes/notes/ubuntu-upstream-mariadb-34ce8106811a1f75.yaml
@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    In Ubuntu images, MariaDB has been upgraded from 10.1 to 10.3.
+    As usual, ensure that all data has been backed up prior to upgrading.