Linear-gradients do not work with html color values that include alpha

[RandomGHUser]

.content {
    background: linear-gradient(#000000af, #0000009f);
}

returns

Compilation Error
Error: Invalid CSS after "...inear-gradient(": expected expression (e.g. 1px, bold), was "#000000af, #0000009"
        on line 288 of sass/c:\test\sass\header.scss
>>     background: linear-gradient(#000000af, #0000009f);
   --------------------------------^

Is there a line I can include in the meantime to just write the lines as is?
I've tried

// scss-lint:disable all

But it still fails on compilation.

[ritwickdey]

This is a library issue. I'm upgrading the library. Will fix after next update

Duplicate of #39

[ritwickdey]

This issue has been fixed from v3.0.0. Please let know if it's still not working.
Thanks for the report.