diff --git a/documentation/src/bundled-libs.dox b/documentation/src/bundled-libs.dox
index 1fcba8109..2de0b680e 100644
--- a/documentation/src/bundled-libs.dox
+++ b/documentation/src/bundled-libs.dox
@@ -23,14 +23,14 @@ The nanosvg library is not affected.
 
 \section bundled-status Current status
 \code
-Current versions of bundled libraries (as of August 23, 2023):
+Current versions of bundled libraries (as of August 25, 2023):
   Library       Version/git commit Release date         FLTK Version
   --------------------------------------------------------------------------
   jpeg          jpeg-9e            2022-01-16           1.4.0
   nanosvg       abcd277ea4 [1]     2022-12-22           1.4.0
   png           libpng-1.6.40      2023-06-21           1.4.0
   zlib          zlib-1.3           2023-08-18           1.4.0
-  libdecor      f43652c7   [2]     2023-07-15           1.4.0
+  libdecor      ca6e6b68   [2]     2023-08-25           1.4.0
   --------------------------------------------------------------------------
 
 Previous versions of bundled libraries (FLTK 1.3.x):
diff --git a/libdecor/build/fl_libdecor.c b/libdecor/build/fl_libdecor.c
index 6716bf746..ab6cee5c2 100644
--- a/libdecor/build/fl_libdecor.c
+++ b/libdecor/build/fl_libdecor.c
@@ -1,7 +1,7 @@
 //
 // Interface with the libdecor library for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 2022 by Bill Spitzak and others.
+// Copyright 2022-2023 by Bill Spitzak and others.
 //
 // This library is free software. Distribution and use rights are outlined in
 // the file "COPYING" which should have been included with this file.  If this
@@ -16,12 +16,10 @@
 
 /* Improvements to libdecor.c without modifying libdecor.c itself */
 
-// this part to support libdecor commit f43652c7 dated 15-jul-2023
 #include "xdg-shell-client-protocol.h"
-#ifndef XDG_TOPLEVEL_STATE_SUSPENDED_SINCE_VERSION
-#  define XDG_TOPLEVEL_STATE_SUSPENDED (enum xdg_toplevel_state)9
+#ifdef XDG_TOPLEVEL_STATE_SUSPENDED_SINCE_VERSION
+#  define HAVE_XDG_SHELL_V6 1
 #endif
-// end of this part
 
 #define libdecor_frame_set_minimized libdecor_frame_set_minimized_orig
 #define libdecor_new libdecor_new_orig
diff --git a/libdecor/src/libdecor.c b/libdecor/src/libdecor.c
index b08488939..6fc184c10 100644
--- a/libdecor/src/libdecor.c
+++ b/libdecor/src/libdecor.c
@@ -42,6 +42,12 @@
 #include "xdg-shell-client-protocol.h"
 #include "xdg-decoration-client-protocol.h"
 
+#ifdef HAVE_XDG_SHELL_V6
+#define XDG_WM_BASE_VER 6
+#else
+#define XDG_WM_BASE_VER 2
+#endif
+
 struct libdecor {
 	int ref_count;
 
@@ -390,9 +396,11 @@ parse_states(struct wl_array *states)
 		case XDG_TOPLEVEL_STATE_TILED_BOTTOM:
 			pending_state |= LIBDECOR_WINDOW_STATE_TILED_BOTTOM;
 			break;
+#ifdef HAVE_XDG_SHELL_V6
 		case XDG_TOPLEVEL_STATE_SUSPENDED:
 			pending_state |= LIBDECOR_WINDOW_STATE_SUSPENDED;
 			break;
+#endif
 		default:
 			break;
 		}
@@ -434,6 +442,7 @@ xdg_toplevel_close(void *user_data,
 	frame_priv->iface->close(frame, frame_priv->user_data);
 }
 
+#ifdef HAVE_XDG_SHELL_V6
 static void
 xdg_toplevel_configure_bounds(void *data,
 			      struct xdg_toplevel *xdg_toplevel,
@@ -448,12 +457,15 @@ xdg_toplevel_wm_capabilities(void *data,
 			     struct wl_array *capabilities)
 {
 }
+#endif
 
 static const struct xdg_toplevel_listener xdg_toplevel_listener = {
 	xdg_toplevel_configure,
 	xdg_toplevel_close,
+#ifdef HAVE_XDG_SHELL_V6
 	xdg_toplevel_configure_bounds,
 	xdg_toplevel_wm_capabilities,
+#endif
 };
 
 static void
@@ -593,6 +605,11 @@ libdecor_frame_unref(struct libdecor_frame *frame)
 		struct libdecor *context = frame_priv->context;
 		struct libdecor_plugin *plugin = context->plugin;
 
+		if (context->decoration_manager && frame_priv->toplevel_decoration) {
+        		zxdg_toplevel_decoration_v1_destroy(frame_priv->toplevel_decoration);
+        		frame_priv->toplevel_decoration = NULL;
+        	}
+
 		wl_list_remove(&frame->link);
 
 		if (frame_priv->xdg_toplevel)
@@ -1258,7 +1275,7 @@ init_xdg_wm_base(struct libdecor *context,
 	context->xdg_wm_base = wl_registry_bind(context->wl_registry,
 						id,
 						&xdg_wm_base_interface,
-						MIN(version,6));
+						MIN(version,XDG_WM_BASE_VER));
 	xdg_wm_base_add_listener(context->xdg_wm_base,
 				 &xdg_wm_base_listener,
 				 context);