diff --git a/modules/shared/nix-daemon.nix b/modules/shared/nix-daemon.nix
index 23ade39..5e16bee 100644
--- a/modules/shared/nix-daemon.nix
+++ b/modules/shared/nix-daemon.nix
@@ -17,8 +17,8 @@ in
     settings.auto-optimise-store = true;
 
     # auto-free the /nix/store
-    settings.min-free = asGB 10;
-    settings.max-free = asGB 200;
+    settings.min-free = asGB 30;
+    settings.max-free = asGB 50;
 
     # useful for ad-hoc nix-shell's for debugging
     # use mkForce to avoid search path warnings with nix-darwin