diff --git a/matrix.yml b/matrix.yml
index 397eef3..ae2f0dc 100644
--- a/matrix.yml
+++ b/matrix.yml
@@ -44,6 +44,16 @@
           max_upload_size: 2048M
           retention:
             enabled: true
+            default_policy:
+              min_lifetime: 30d
+              max_lifetime: 180d
+            allowed_lifetime_min: 30d
+            allowed_lifetime_max: 180y
+            purge_jobs:
+              - longest_max_lifetime: 3d
+                interval: 12h
+              - shortest_max_lifetime: 3d
+                interval: 1d
           federation_ip_range_blacklist:
             - '127.0.0.0/8'
             - '10.0.0.0/8'