diff --git a/tasks/main.yml b/tasks/main.yml
index 6b6daf6..91e3eb7 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -13,6 +13,11 @@
   with_items:
     - jessie
     - stretch
+- name: remove obsolete apt list entries
+  lineinfile: path=/etc/apt/sources.list regexp="{{ item }}-backports" state=absent
+  with_items:
+    - jessie
+    - stretch
 
 - name: update apt cache
   apt: update_cache=yes