diff --git a/roles/common/templates/tarsnap_sources.list.j2 b/roles/common/templates/tarsnap_sources.list.j2
index 8b75812..824dbc8 100644
--- a/roles/common/templates/tarsnap_sources.list.j2
+++ b/roles/common/templates/tarsnap_sources.list.j2
@@ -1 +1,6 @@
+{% if ansible_distribution_release == 'bionic' %}
+# 2018-03-17: no Ubuntu 18.04 "bionic" packages yet, so use 17.10 "artful"
+deb https://pkg.tarsnap.com/deb/artful ./
+{% else %}
 deb https://pkg.tarsnap.com/deb/{{ ansible_distribution_release }} ./
+{% endif %}