diff --git a/debian/gitlab.maintscript b/debian/gitlab.maintscript
index e9d5bbfa73..ebdf50ce2f 100644
--- a/debian/gitlab.maintscript
+++ b/debian/gitlab.maintscript
@@ -1206,3 +1206,6 @@ rm_conffile /etc/gitlab/routes/sherlock.rb 15.5.4+ds1-1 gitlab
 rm_conffile /etc/gitlab/unicorn.rb.example 15.5.4+ds1-1 gitlab
 rm_conffile /etc/gitlab/unicorn.rb.example.development 15.5.4+ds1-1 gitlab
 rm_conffile /etc/gitlab/feature_flags/development/gitaly_catfile-cache.yml 15.7.8+ds1-10 gitlab
+rm_conffile /etc/gitlab/feature_flags/development/projects_build_artifacts_size_refresh_high.yml 15.7.8+ds1-11 gitlab
+rm_conffile /etc/gitlab/feature_flags/development/projects_build_artifacts_size_refresh_medium.yml 15.7.8+ds1-11 gitlab
+rm_conffile /etc/gitlab/feature_flags/development/projects_build_artifacts_size_refresh_low.yml 15.7.8+ds1-11 gitlab