diff --git a/machines/_base.nix b/machines/_base.nix
index 4c40420..f0e5167 100644
--- a/machines/_base.nix
+++ b/machines/_base.nix
@@ -55,14 +55,16 @@ in {
       };
 
       # https://nixos.wiki/wiki/Storage_optimization
-      gc = {
-        automatic = true;
-        dates = "weekly";
-        options = "--delete-older-than 30d";
-      };
+      #      gc = {
+      #        automatic = true;
+      #        dates = "weekly";
+      #        options = "--delete-older-than 30d";
+      #      };
+
+      # to free up to 10GiB whenever there is less than 1GiB left
       extraOptions = ''
-        min-free = ${toString (100 * 1024 * 1024)}
-        max-free = ${toString (1024 * 1024 * 1024)}
+        min-free = ${toString (1024 * 1024 * 1024)}
+        max-free = ${toString (1024 * 1024 * 1024 * 10)}
       '';
     };