diff --git a/nixos/modules/services/misc/nix-daemon.nix b/nixos/modules/services/misc/nix-daemon.nix
index a4d2d10af70f..f6f74d12e106 100644
--- a/nixos/modules/services/misc/nix-daemon.nix
+++ b/nixos/modules/services/misc/nix-daemon.nix
@@ -734,7 +734,7 @@ in
             CPUSchedulingPolicy = cfg.daemonCPUSchedPolicy;
             IOSchedulingClass = cfg.daemonIOSchedClass;
             IOSchedulingPriority = cfg.daemonIOSchedPriority;
-            LimitNOFILE = 4096;
+            LimitNOFILE = 1048576;
           };
 
         restartTriggers = [ nixConf ];