--- configure.ac.orig	2021-10-23 20:04:23 UTC
+++ configure.ac
@@ -7,9 +7,9 @@ AC_PROG_RANLIB
 AM_PROG_CC_C_O
 AC_HEADER_STDC
 PKG_PROG_PKG_CONFIG([0.20])
-PKG_CHECK_MODULES(GTK, [gtk+-3.0])
+PKG_CHECK_MODULES(GTK, [gtk+-2.0 >= 2.12.0])
 PKG_CHECK_MODULES(GLIB, [glib-2.0 >= 2.16.0])
-PKG_CHECK_MODULES(LIBWNCK, [libwnck-3.0])
+PKG_CHECK_MODULES(LIBWNCK, [libwnck-1.0 >= 2.22.0])
 PKG_CHECK_MODULES(LIBXKLAVIER, [libxklavier >= 5.0])
 AC_SUBST(GTK_CFLAGS)
 AC_SUBST(GTK_LIBS)
--- src/statusicon.c.orig	2021-10-19 19:39:16 UTC
+++ src/statusicon.c
@@ -65,7 +65,9 @@ void gtk_status_icon_clicked(GtkStatusIcon *status_ico
     return;
 
   if (xkb_config_get_group_count() > 2) {
-    gtk_menu_popup_at_pointer(GTK_MENU(lb_mouse_popup), NULL);
+    gtk_menu_popup(GTK_MENU(lb_mouse_popup), NULL, NULL,
+      gtk_status_icon_position_menu, status_icon,
+      0, gtk_get_current_event_time());
   } else {
     xkb_config_next_group();
   }
@@ -97,7 +99,9 @@ void gtk_status_icon_popup_menu(GtkStatusIcon *status_
   if (status_icon == NULL)
     return;
 
-  gtk_menu_popup_at_pointer(GTK_MENU(rb_mouse_popup), NULL);
+  gtk_menu_popup(GTK_MENU(rb_mouse_popup),
+    NULL, NULL, gtk_status_icon_position_menu, status_icon, button,
+    activate_time);
 }
 
 void statusicon_set_group(GtkWidget *item, gpointer data) {
@@ -127,7 +131,7 @@ void statusicon_update_current_image(void) {
     }
 
     gtk_status_icon_set_from_pixbuf(trayicon, pixmap);
-    gtk_status_icon_set_tooltip_text(
+    gtk_status_icon_set_tooltip(
         trayicon, g_strdup(gettext(xkb_config_get_pretty_layout_name(-1))));
   } else if (icon_type == APPINDICATOR) {
 #ifdef HAVE_APPINDICATOR
@@ -184,7 +188,7 @@ void statusicon_update_menu(void) {
 
   if (icon_type == APPINDICATOR) {
     // Separator
-    mi = gtk_separator_menu_item_new();
+    mi = gtk_menu_item_new();
     gtk_widget_show(mi);
     gtk_menu_shell_append(GTK_MENU_SHELL(lb_mouse_popup), mi);
     gtk_widget_set_sensitive(mi, FALSE);
@@ -193,20 +197,20 @@ void statusicon_update_menu(void) {
     rb_mouse_popup = gtk_menu_new();
   }
 
-  mi = gtk_image_menu_item_new_from_stock("gtk-about", NULL);
+  mi = gtk_image_menu_item_new_from_stock(GTK_STOCK_ABOUT, NULL);
   g_signal_connect(G_OBJECT(mi), "activate", (GCallback)xkb_about, NULL);
   gtk_menu_shell_append(GTK_MENU_SHELL(rb_mouse_popup), mi);
   gtk_widget_show(mi);
 
   if (icon_type == SYSTRAY) {
     // Separator
-    mi = gtk_separator_menu_item_new();
+    mi = gtk_menu_item_new();
     gtk_widget_show(mi);
     gtk_menu_shell_append(GTK_MENU_SHELL(rb_mouse_popup), mi);
     gtk_widget_set_sensitive(mi, FALSE);
   }
 
-  mi = gtk_image_menu_item_new_from_stock("gtk-quit", NULL);
+  mi = gtk_image_menu_item_new_from_stock(GTK_STOCK_QUIT, NULL);
   g_signal_connect(G_OBJECT(mi), "activate", (GCallback)xkb_main_quit, NULL);
   gtk_menu_shell_append(GTK_MENU_SHELL(rb_mouse_popup), mi);
   gtk_widget_show(mi);
--- src/xkb-callbacks.c.orig	2021-10-19 18:47:24 UTC
+++ src/xkb-callbacks.c
@@ -64,12 +64,12 @@ void xkb_about(void) {
     GtkWidget *about_dialog = gtk_about_dialog_new();
     gtk_window_set_icon(
         (GtkWindow *)about_dialog,
-        gtk_icon_theme_load_icon(gtk_icon_theme_get_default(), "gtk-about",
-                                 GTK_ICON_SIZE_DIALOG, 0, NULL));
+        gtk_widget_render_icon(about_dialog, GTK_STOCK_ABOUT,
+                               GTK_ICON_SIZE_DIALOG, NULL));
 
-    const gchar **authors = (const gchar **)g_strsplit(AUTHORS, "\n", -1);
+    const gchar *authors[] = { AUTHORS, NULL };
     gtk_about_dialog_set_authors((GtkAboutDialog *)about_dialog, authors);
-    gtk_about_dialog_set_program_name((GtkAboutDialog *)about_dialog, PACKAGE);
+    gtk_about_dialog_set_name((GtkAboutDialog *)about_dialog, PACKAGE);
     gtk_about_dialog_set_version((GtkAboutDialog *)about_dialog, VERSION);
     gtk_about_dialog_set_comments((GtkAboutDialog *)about_dialog, DESCRIPTION);
     gtk_about_dialog_set_website((GtkAboutDialog *)about_dialog, PACKAGE_URL);