diff --git a/modules/nixos/common.nix b/modules/nixos/common.nix
index 21aa1b6..59d65d9 100644
--- a/modules/nixos/common.nix
+++ b/modules/nixos/common.nix
@@ -13,6 +13,7 @@
 
     # Enable automatic garbage collection.
     clean.enable = true;
+    clean.dates = "daily";
     clean.extraArgs = "--keep-since 4d --keep 3";
 
     flake = "/home/wizardlink/.system";