diff --git a/sway/desktop/xdg_shell.c b/sway/desktop/xdg_shell.c
index 47ab902e..7c417891 100644
--- a/sway/desktop/xdg_shell.c
+++ b/sway/desktop/xdg_shell.c
@@ -289,6 +289,7 @@ static void handle_commit(struct wl_listener *listener, void *data) {
 		}
 		// XXX: https://github.com/swaywm/sway/issues/2176
 		wlr_xdg_surface_schedule_configure(xdg_surface);
+		// TODO: wlr_xdg_toplevel_set_bounds()
 		return;
 	}
 
@@ -574,4 +575,7 @@ void handle_xdg_shell_toplevel(struct wl_listener *listener, void *data) {
 	wlr_scene_xdg_surface_create(xdg_shell_view->view.content_tree, xdg_toplevel->base);
 
 	xdg_toplevel->base->data = xdg_shell_view;
+
+	wlr_xdg_toplevel_set_wm_capabilities(xdg_toplevel,
+		XDG_TOPLEVEL_WM_CAPABILITIES_FULLSCREEN);
 }
diff --git a/sway/server.c b/sway/server.c
index cb8bdbf9..2a0dc1e7 100644
--- a/sway/server.c
+++ b/sway/server.c
@@ -65,7 +65,7 @@
 #include <wlr/types/wlr_drm_lease_v1.h>
 #endif
 
-#define SWAY_XDG_SHELL_VERSION 3
+#define SWAY_XDG_SHELL_VERSION 5
 #define SWAY_LAYER_SHELL_VERSION 4
 #define SWAY_FOREIGN_TOPLEVEL_LIST_VERSION 1