Appending multiple src streams in a gulp task

gulpfile.js

var streamqueue = require('streamqueue');

gulp.task('zipit', ['clean', 'less'], function () {

   var stream = streamqueue({objectMode: true});

   stream.queue(
      gulp.src(['**', '!./protobuffer/**', '!./node_modules/**', '!./archive/**', '!./.idea/**', '!./db/**', '!./docs/**', '!./logs/**'], {base: "."})
   );

   // let's add a single file from /protobuffer that was excluded in the previous src stream
   stream.queue(
      gulp.src('./protobuffer/circulationData.proto', {base: "."})
   );

   return stream.done()    
        .pipe(zip('foo' + packageVersion + '.zip'))
        .pipe(gulp.dest('archive'));
});