diff --git a/source/tutorials/first-steps/declarative-shell.md b/source/tutorials/first-steps/declarative-shell.md
index 6121c894c..4a7a7774e 100644
--- a/source/tutorials/first-steps/declarative-shell.md
+++ b/source/tutorials/first-steps/declarative-shell.md
@@ -54,7 +54,7 @@ Create a file called `shell.nix` with these contents:
 
 ```nix
 let
-  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-23.11";
+  nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-24.05";
   pkgs = import nixpkgs { config = {}; overlays = []; };
 in
 
@@ -103,7 +103,7 @@ Set `GREETING` so it can be used in the shell environment:
 
 ```diff
  let
-   nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-23.11";
+   nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-24.05";
    pkgs = import nixpkgs { config = {}; overlays = []; };
  in
 
@@ -143,7 +143,7 @@ Set `shellHook` to output a colorful greeting:
 
 ```diff
  let
-   nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-23.11";
+   nixpkgs = fetchTarball "https://github.com/NixOS/nixpkgs/tarball/nixos-24.05";
    pkgs = import nixpkgs { config = {}; overlays = []; };
  in