diff --git a/global/overlay/etc/puppet/cosmos-rules.yaml b/global/overlay/etc/puppet/cosmos-rules.yaml
index 44ed27c..3997cb2 100644
--- a/global/overlay/etc/puppet/cosmos-rules.yaml
+++ b/global/overlay/etc/puppet/cosmos-rules.yaml
@@ -31,6 +31,7 @@
 '^internal-.+-test-cache-[0-9]+\.cdn\.sunet\.se$':
   sunet::dockerhost2:
   cdn::cache:
+  sunet::certbot::sync::client:
 
 '^internal-.+-test-cs-[0-9]+\.cdn\.sunet\.se$':
   sunet::certbot::acmed: