diff --git a/mariadb/templates/bin/_start.py.tpl b/mariadb/templates/bin/_start.py.tpl
index 3f4efb7bb..0b5c162ab 100644
--- a/mariadb/templates/bin/_start.py.tpl
+++ b/mariadb/templates/bin/_start.py.tpl
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/python3
 
 {{/*
 Copyright 2018 The Openstack-Helm Authors.
diff --git a/mariadb/values.yaml b/mariadb/values.yaml
index c4adbd55f..2d75f396f 100644
--- a/mariadb/values.yaml
+++ b/mariadb/values.yaml
@@ -21,10 +21,11 @@ release_group: null
 
 images:
   tags:
-    mariadb: docker.io/openstackhelm/mariadb:10.2.18
+    # 10.2.31
+    mariadb: openstackhelm/mariadb@sha256:5f05ce5dce71c835c6361a05705da5cce31114934689ec87dfa48b8f8c600f70
     ingress: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.9.0
     error_pages: gcr.io/google_containers/defaultbackend:1.0
-    prometheus_create_mysql_user: docker.io/mariadb:10.2.13
+    prometheus_create_mysql_user: docker.io/mariadb:10.2.31
     prometheus_mysql_exporter: docker.io/prom/mysqld-exporter:v0.10.0
     prometheus_mysql_exporter_helm_tests: docker.io/openstackhelm/heat:newton-ubuntu_xenial
     dep_check: quay.io/airshipit/kubernetes-entrypoint:v1.0.0