diff --git a/yt_dlp/extractor/youtube.py b/yt_dlp/extractor/youtube.py
index ee4c98473..770043205 100644
--- a/yt_dlp/extractor/youtube.py
+++ b/yt_dlp/extractor/youtube.py
@@ -3573,6 +3573,8 @@ def _extract_comment(self, entities, parent=None):
                 'author_thumbnail': ('author', 'avatarThumbnailUrl', {url_or_none}),
                 'author_is_uploader': ('author', 'isCreator', {bool}),
                 'author_is_verified': ('author', 'isVerified', {bool}),
+                'author_is_member': ('author', 'sponsorBadgeA11y', {str}),
+                'author_member_badge': ('author', 'sponsorBadgeUrl', {url_or_none}),
                 'author_url': ('author', 'channelCommand', 'innertubeCommand', (
                     ('browseEndpoint', 'canonicalBaseUrl'), ('commandMetadata', 'webCommandMetadata', 'url'),
                 ), {urljoin('https://www.youtube.com')}),