diff --git a/roles/prometheus/tasks/main.yml b/roles/prometheus/tasks/main.yml
index 79aeebd..b732342 100644
--- a/roles/prometheus/tasks/main.yml
+++ b/roles/prometheus/tasks/main.yml
@@ -1,10 +1,11 @@
 ---
 
-- name: Enable backports for prometheus
-  apt_repository: repo='deb http://httpredir.debian.org/debian stretch-backports main'
+- name: Check OS release
+  fail: msg="This role is only supported on Debian buster"
+  when: not (ansible_distribution == 'Debian' and ansible_distribution_release == 'buster')
 
 - name: Install prometheus
-  apt: name=prometheus default_release=stretch-backports
+  apt: name=prometheus
 
 - name: Configure prometheus
   template: src=prometheus.yml.j2 dest=/etc/prometheus/prometheus.yml