url_to with params not rendering params

[Jan]

• Mojolicious version: 9.26
• Perl version: 5.36
• Operating system: Debian bullseye

I have a mojolicious lite app and in it, I have this route:
get 'some_route/<page:num>' => sub($c) { ... };

In the template, I try to call it like this:

%= url_for('some_route', {page => 1});
# or
%= url_for('some_route', page => 1);

Which renders
some_route

and I think, it should render
some_route/1

Am I misunderstanding anything here? I am following
https://docs.mojolicious.org/Mojolicious/Controller#url_for
and
https://docs.mojolicious.org/Mojolicious/Guides/Routing#Optional-placeholders