diff --git a/modules/system/boot/stage-1.nix b/modules/system/boot/stage-1.nix
index 22ae196a0f21..ab94c157874a 100644
--- a/modules/system/boot/stage-1.nix
+++ b/modules/system/boot/stage-1.nix
@@ -129,6 +129,7 @@ let
       cp -v ${pkgs.coreutils}/bin/mknod $out/bin
       cp -v ${pkgs.coreutils}/bin/cat $out/bin
       cp -v ${pkgs.coreutils}/bin/chroot $out/bin
+      cp -v ${pkgs.coreutils}/bin/sleep $out/bin
 
       # Copy e2fsck and friends.      
       cp -v ${pkgs.e2fsprogs}/sbin/e2fsck $out/bin