How to add HTML5 data- attributes to a rails form label tag?

I have a rails form that has this code:

<%= form_tag("../vehicles", method: "get") do %>
  <div>
    <div>
      <%= label_tag(:address, t("ui.reservations.pickup"), data-addr: 'here') %>
    </div>
    <div>
      <%= label_tag(:address, t("ui.reservations.between_now_and_param", param: @start_date.strftime(    time_format))) %>
    </div>
    <div>

I want to add a HTML data attribute to the first label, so I tried:

<%= label_tag(:address, t("ui.reservations.pickup"), data-addr: 'here') %>

but I get a syntax error:

SyntaxError in Reservations#new

.../_form.html.erb:8: syntax error, unexpected tLABEL

');@output_buffer.append= ( label_tag(:address, t("ui.reservations.pickup"), data-addr: 'here') );@output_buffer.safe_concat('...

I can add it as

    <%= label_tag(:address, t("ui.reservations.pickup"), data: 'here') %>

That generates:

<label for="address" data="here">

but I don't seem to be able to add data-something attributes. I get syntax error.

How can I do this?