diff --git a/docker/tasks.py b/docker/tasks.py
index 4506dfdf..33df0c5e 100644
--- a/docker/tasks.py
+++ b/docker/tasks.py
@@ -29,6 +29,8 @@ OLD = [ 'debian-9',
         'fedora-31',
         'fedora-32',
         'fedora-33',
+        'centos-7',
+        'centos-8',
         ]