diff --git a/roles/common/programs/nix.nix b/roles/common/programs/nix.nix
index fd36171..41e4cc2 100755
--- a/roles/common/programs/nix.nix
+++ b/roles/common/programs/nix.nix
@@ -6,6 +6,10 @@
 			auto-optimise-store = true;
 			experimental-features = "nix-command flakes";
 		};
+		optimise = {
+			automatic = true;
+			dates = [ "weekly" ];
+		};
 		registry = {
 			agenix = {
 				from = { id = "agenix"; type = "indirect"; };