diff --git a/roles/nginx/templates/nginx_org_sources.list.j2 b/roles/nginx/templates/nginx_org_sources.list.j2
index 23763e7..ca10562 100644
--- a/roles/nginx/templates/nginx_org_sources.list.j2
+++ b/roles/nginx/templates/nginx_org_sources.list.j2
@@ -2,11 +2,21 @@
 
 {% if ansible_distribution == 'Ubuntu' %}
 {% if nginx_version == "stable" %}
+{% if ansible_distribution_release == 'bionic' %}
+# 2018-03-17: no Ubuntu 18.04 "bionic" packages yet, so use 17.10 "artful"
+deb https://nginx.org/packages/ubuntu/ artful nginx
+{% else %}
 deb https://nginx.org/packages/ubuntu/ {{ ansible_distribution_release }} nginx
+{% endif %}
 {% elif nginx_version == "mainline" %}
+{% if ansible_distribution_release == 'bionic' %}
+# 2018-03-17: no Ubuntu 18.04 "bionic" packages yet, so use 17.10 "artful"
+deb https://nginx.org/packages/mainline/ubuntu/ artful nginx
+{% else %}
 deb https://nginx.org/packages/mainline/ubuntu/ {{ ansible_distribution_release }} nginx
 {% endif %}
 {% endif %}
+{% endif %}
 
 {% if ansible_distribution == 'Debian' %}
 {% if nginx_version == "stable" %}