diff --git a/docs/dev/README.rst b/docs/dev/README.rst
index 29300baaba96bac2cc00038c4dfe73f595491731..36af5307ae4b75fb561e72aa8ea1d60303602799 100644
--- a/docs/dev/README.rst
+++ b/docs/dev/README.rst
@@ -51,7 +51,7 @@ To update the version of NixOS we deploy with, run:
 
    nix-shell --run 'update-nixpkgs'
 
-That will update ``nixpkgs-2015.json`` to the latest release on the nixos-21.05 channel.
+That will update ``nixpkgs.json`` to the latest release on the nixos release channel.
 
 To update the channel, the script will need to be updated,
 along with the filenames that have the channel in them.