titilium font over https

I use titilium fonts in hueman theme. Local titilium fonts do not include Serbian characters ????? nicely, but ugly replacement fonts, at least in chromium browser. When using titilium web fonts, they are loaded over http (as hardcoded in dynamic-styles.php), but my blog uses automatic http to https redirection, so chromium complains about some content loaded over insecure connection.

Is it possible to include the possibility to load fonts over https? Or even better to unclude full titilium codepage locally?

Thank you in advance,