diff --git a/debian/gitlab.maintscript b/debian/gitlab.maintscript
index e7e36451f4..f92cf91db1 100644
--- a/debian/gitlab.maintscript
+++ b/debian/gitlab.maintscript
@@ -1216,3 +1216,4 @@ rm_conffile /etc/gitlab/initializers/types.rb 15.9.8+ds1-1 gitlab
 rm_conffile /etc/gitlab/initializers/active_record_data_types.rb 15.9.8+ds1-1 gitlab
 rm_conffile /etc/gitlab/initializers/9_fast_gettext.rb 15.9.8+ds1-1 gitlab
 rm_conffile /etc/gitlab/initializers/0_log_deprecations.rb 15.9.8+ds1-1 gitlab
+rm_conffile /etc/gitlab/feature_flags/development/s3_multithreaded_uploads.yml 15.10.8+ds1-2 gitlab