diff --git a/systems/palatine-hill/zfs.nix b/systems/palatine-hill/zfs.nix
index c90ee1c..9177902 100644
--- a/systems/palatine-hill/zfs.nix
+++ b/systems/palatine-hill/zfs.nix
@@ -77,6 +77,8 @@ in
           frequently = 4;
           hourly = 24;
           daily = 7;
+          autosnap = true;
+          autoprune = true;
         };
         # much shorter lived than others
         games = {