diff -ruN desktopfolder-1.1.3.orig/meson.build desktopfolder-1.1.3/meson.build
--- desktopfolder-1.1.3.orig/meson.build	2020-09-02 15:32:39.000000000 +0300
+++ desktopfolder-1.1.3/meson.build	2021-10-09 00:18:18.722505065 +0300
@@ -88,6 +88,7 @@
         dependency('glib-2.0'),
         dependency('gobject-2.0'),
         dependency('gtk+-3.0',version:'>=3.22'),
+        dependency('granite', version: '>= 6.0.0'),
         dependency('cairo'),
         dependency('json-glib-1.0'),
         dependency('gdk-pixbuf-2.0'),
diff -ruN desktopfolder-1.1.3.orig/src/Application.vala desktopfolder-1.1.3/src/Application.vala
--- desktopfolder-1.1.3.orig/src/Application.vala	2021-10-09 00:18:39.319067731 +0300
+++ desktopfolder-1.1.3/src/Application.vala	2021-10-09 00:19:54.731827116 +0300
@@ -82,6 +82,16 @@
      * @description activate life cycle
      */
     protected override void activate () {
+        // elementary OS 6 dark mode support
+        var granite_settings = Granite.Settings.get_default ();
+        var gtk_settings = Gtk.Settings.get_default ();
+
+        gtk_settings.gtk_application_prefer_dark_theme = granite_settings.prefers_color_scheme == Granite.Settings.ColorScheme.DARK;
+
+        granite_settings.notify["prefers-color-scheme"].connect (() => {
+            gtk_settings.gtk_application_prefer_dark_theme = granite_settings.prefers_color_scheme == Granite.Settings.ColorScheme.DARK;
+        });
+
         base.activate ();
         debug ("activate event");
         this.hold ();