diff --git a/prezentace.md b/prezentace.md
index ab1581d..67671b5 100644
--- a/prezentace.md
+++ b/prezentace.md
@@ -119,6 +119,10 @@ nix run nixpkgs#cowsay #Nove
 # nixos-rebuild
 * Je to jen bash script
 ```
+nixos-rebuild --flake
+nh os switch
+```
+```
 nix build /etc/nixos#nixosConfigurations.nixos.config.system.build.toplevel \
 && ./result/bin/switch-to-configuration switch
 ```
\ No newline at end of file