diff --git a/modules/fish.nix b/modules/fish.nix
index 16d334b..5d24ca7 100644
--- a/modules/fish.nix
+++ b/modules/fish.nix
@@ -20,6 +20,8 @@
       "nes" = "sudo nix-env --profile /nix/var/nix/profiles/system";
       "nesl" = "sudo nix-env --profile /nix/var/nix/profiles/system --list-generations";
       "nesd" = "sudo nix-env --profile /nix/var/nix/profiles/system --delete-generations";
+      "ness" = "sudo nix-env --profile /nix/var/nix/profiles/system --switch-generation";
+      "nesr" = "sudo nix-env --profile /nix/var/nix/profiles/system --rollback";
       "ngl" = "nix registry list";
       "ngpn" = "nix registry pin nixpkgs";
       "ngrn" = "nix registry remove nixpkgs";