diff --git a/Userland/Applications/SystemMonitor/main.cpp b/Userland/Applications/SystemMonitor/main.cpp
index eb2272ebad..4536aa01ea 100644
--- a/Userland/Applications/SystemMonitor/main.cpp
+++ b/Userland/Applications/SystemMonitor/main.cpp
@@ -408,7 +408,16 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 
     auto& refresh_timer = window->add<Core::Timer>(
         frequency * 1000, [&] {
+            // FIXME: remove the primitive re-toggling code once persistent model indices work.
+            auto toggled_indices = process_table_view.selection().indices();
+            toggled_indices.remove_all_matching([&](auto const& index) { return !process_table_view.is_toggled(index); });
             process_model->update();
+            if (!process_table_view.selection().is_empty())
+                process_table_view.selection().for_each_index([&](auto& selection) {
+                    if (toggled_indices.contains_slow(selection))
+                        process_table_view.expand_all_parents_of(selection);
+                });
+
             if (auto* memory_stats_widget = SystemMonitor::MemoryStatsWidget::the())
                 memory_stats_widget->refresh();
         });