?buildTime=0 in htmls is fixed as 0 when I install it using pip

[jsrobot]

is it intended?
I guess it is set to refresh/re download assets automatically when it is updated. However it is always set to 0.
for example <link rel="stylesheet" href="/_/static/runtime/css/bootstrap-theme.min.css?buildTime=0" crossorigin/>

So, whenever I upgrade anvil-app-server using pip, client have to use force refresh option on web browser.

Do I have to change source code and build it myself?

In case of run the app on the anvil cloud, it is served with
<link rel="stylesheet" href="https://anvil.works/runtime-new/runtime/css/bootstrap-theme.min.css?sha=34b102cb7689409fd1c3c180aeb1fd3f0b8bf0b47ab25c74c42eaff574e661a9" crossorigin/>