diff --git a/lib/backup_restore/restorer.rb b/lib/backup_restore/restorer.rb
index 48c8f080284..781f7f7898a 100644
--- a/lib/backup_restore/restorer.rb
+++ b/lib/backup_restore/restorer.rb
@@ -521,6 +521,7 @@ module BackupRestore
       log "Clear theme cache"
       ThemeField.force_recompilation!
       Theme.expire_site_cache!
+      Stylesheet::Manager.cache.clear
     end
 
     def disable_readonly_mode