diff --git a/modules/nix-config/default.nix b/modules/nix-config/default.nix
index 07d1c93..5acb005 100644
--- a/modules/nix-config/default.nix
+++ b/modules/nix-config/default.nix
@@ -72,4 +72,5 @@
   };
 
   documentation.man.cache.enable = false;
+  boot.tmp.cleanOnBoot = true;
 }