according to output of nix flake update ..., this is the current call

README.md

@@ -23,7 +23,7 @@ Use `nix-shell` or `nix develop` to use ansible.
 
 Update to newer nixpkgs version (check functionality and add a commit afterwards):
 
-`nix flake update --recreate-lock-file --update-input nixpkgs`
+`nix flake update`
 
 #### Using direnv