diff --git a/app/serializers/user_card_serializer.rb b/app/serializers/user_card_serializer.rb
index 617db6a7265..4ff67b99137 100644
--- a/app/serializers/user_card_serializer.rb
+++ b/app/serializers/user_card_serializer.rb
@@ -59,6 +59,7 @@ class UserCardSerializer < BasicUserSerializer
              :recent_time_read,
              :primary_group_id,
              :primary_group_name,
+             :flair_group_id,
              :flair_name,
              :flair_url,
              :flair_bg_color,
diff --git a/spec/serializers/web_hook_user_serializer_spec.rb b/spec/serializers/web_hook_user_serializer_spec.rb
index 68bc42fdc63..3b80fe8a22a 100644
--- a/spec/serializers/web_hook_user_serializer_spec.rb
+++ b/spec/serializers/web_hook_user_serializer_spec.rb
@@ -42,6 +42,7 @@ RSpec.describe WebHookUserSerializer do
       :recent_time_read,
       :primary_group_id,
       :primary_group_name,
+      :flair_group_id,
       :flair_name,
       :flair_url,
       :flair_bg_color,