diff --git a/.builds/alpine.yml b/.builds/alpine.yml
index 55057fa15..fa693906d 100644
--- a/.builds/alpine.yml
+++ b/.builds/alpine.yml
@@ -25,7 +25,7 @@ packages:
   - hwdata-dev
 sources:
   - https://github.com/swaywm/sway
-  - https://gitlab.freedesktop.org/wlroots/wlroots.git#0.20
+  - https://gitlab.freedesktop.org/wlroots/wlroots.git
 tasks:
   - wlroots: |
       cd wlroots
diff --git a/.builds/archlinux.yml b/.builds/archlinux.yml
index 162977e20..2c8ffcf45 100644
--- a/.builds/archlinux.yml
+++ b/.builds/archlinux.yml
@@ -22,7 +22,7 @@ packages:
   - hwdata
 sources:
   - https://github.com/swaywm/sway
-  - https://gitlab.freedesktop.org/wlroots/wlroots.git#0.20
+  - https://gitlab.freedesktop.org/wlroots/wlroots.git
 tasks:
   - wlroots: |
       cd wlroots
diff --git a/.builds/freebsd.yml b/.builds/freebsd.yml
index 8c457b5a3..a3df06e6d 100644
--- a/.builds/freebsd.yml
+++ b/.builds/freebsd.yml
@@ -31,7 +31,7 @@ packages:
 - misc/hwdata
 sources:
 - https://github.com/swaywm/sway
-- https://gitlab.freedesktop.org/wlroots/wlroots.git#0.20
+- https://gitlab.freedesktop.org/wlroots/wlroots.git
 tasks:
 - setup: |
     cd sway
diff --git a/meson.build b/meson.build
index ad26a5a5d..17d65c334 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
 	'sway',
 	'c',
-	version: '1.12',
+	version: '1.13-dev',
 	license: 'MIT',
 	meson_version: '>=1.3',
 	default_options: [
@@ -39,14 +39,14 @@ if is_freebsd
 endif
 
 # Execute the wlroots subproject, if any
-wlroots_version = ['>=0.20.0', '<0.21.0']
+wlroots_version = ['>=0.21.0', '<0.22.0']
 subproject(
 	'wlroots',
 	default_options: ['examples=false'],
 	required: false,
 	version: wlroots_version,
 )
-wlroots = dependency('wlroots-0.20', version: wlroots_version, fallback: 'wlroots')
+wlroots = dependency('wlroots-0.21', version: wlroots_version, fallback: 'wlroots')
 wlroots_features = {
 	'xwayland': false,
 	'libinput_backend': false,
diff --git a/sway/server.c b/sway/server.c
index 8fe79c06f..ed3468b53 100644
--- a/sway/server.c
+++ b/sway/server.c
@@ -78,6 +78,7 @@
 #define SWAY_LAYER_SHELL_VERSION 5
 #define SWAY_FOREIGN_TOPLEVEL_LIST_VERSION 1
 #define SWAY_PRESENTATION_VERSION 2
+#define SWAY_XDG_DECORATION_VERSION 2
 
 bool unsupported_gpu_detected = false;
 
@@ -228,7 +229,7 @@ static void handle_renderer_lost(struct wl_listener *listener, void *data) {
 }
 
 static void handle_new_foreign_toplevel_capture_request(struct wl_listener *listener, void *data) {
-	struct wlr_ext_foreign_toplevel_image_capture_source_manager_v1_request *request = data;
+	struct wlr_ext_foreign_toplevel_image_capture_source_manager_v1_request_event *request = data;
 	struct sway_view *view = request->toplevel_handle->data;
 
 	if (view->image_capture_source == NULL) {
@@ -396,7 +397,8 @@ bool server_init(struct sway_server *server) {
 	wl_list_init(&server->decorations);
 
 	server->xdg_decoration_manager =
-		wlr_xdg_decoration_manager_v1_create(server->wl_display);
+		wlr_xdg_decoration_manager_v1_create(server->wl_display,
+			SWAY_XDG_DECORATION_VERSION);
 	if (!server->xdg_decoration_manager) {
 		sway_log(SWAY_ERROR, "Failed to create XDG decoration manager");
 		return false;
@@ -559,7 +561,7 @@ bool server_init(struct sway_server *server) {
 		return false;
 	}
 	server->new_foreign_toplevel_capture_request.notify = handle_new_foreign_toplevel_capture_request;
-	wl_signal_add(&server->ext_foreign_toplevel_image_capture_source_manager_v1->events.new_request,
+	wl_signal_add(&server->ext_foreign_toplevel_image_capture_source_manager_v1->events.capture_request,
 		&server->new_foreign_toplevel_capture_request);
 
 	server->tearing_control_v1 =
diff --git a/sway/sway.5.scd b/sway/sway.5.scd
index 952d243d2..c53ca8115 100644
--- a/sway/sway.5.scd
+++ b/sway/sway.5.scd
@@ -294,6 +294,10 @@ set|plus|minus|toggle <amount>
 	A no operation command that can be used to override default behaviour. The
 	optional comment argument is ignored, but logged for debugging purposes.
 
+*opacity* [set|plus|minus] <value>
+	Adjusts the opacity of the window between 0 (completely transparent) and
+	1 (completely opaque). If the operation is omitted, _set_ will be used.
+
 *reload*
 	Reloads the sway config file and applies any changes. The config file is
 	located at path specified by the command line arguments when started,
@@ -873,10 +877,6 @@ The default colors are:
 	Any mark that starts with an underscore will not be drawn even if
 	*show_marks* is yes. The default is _yes_.
 
-*opacity* [set|plus|minus] <value>
-	Adjusts the opacity of the window between 0 (completely transparent) and
-	1 (completely opaque). If the operation is omitted, _set_ will be used.
-
 *tiling_drag*  enable|disable|toggle
 	Sets whether or not tiling containers can be dragged with the mouse. If
 	_enabled_ (default), the _floating_mod_ can be used to drag tiling, as well
diff --git a/swaybar/ipc.c b/swaybar/ipc.c
index 68d8dd32d..c3929a35f 100644
--- a/swaybar/ipc.c
+++ b/swaybar/ipc.c
@@ -417,6 +417,28 @@ void ipc_execute_binding(struct swaybar *bar, struct swaybar_binding *bind) {
 }
 
 bool ipc_initialize(struct swaybar *bar) {
+	if (!bar->id) {
+		uint32_t len = 0;
+		char *res = ipc_single_command(bar->ipc_socketfd,
+				IPC_GET_BAR_CONFIG, "", &len);
+		json_object *bars = json_tokener_parse(res);
+		if (!json_object_is_type(bars, json_type_array)
+				|| json_object_array_length(bars) == 0) {
+			sway_log(SWAY_ERROR, "No bar configuration found, "
+					"please configure a bar block in your sway config file.");
+			json_object_put(bars);
+			free(res);
+			return false;
+		}
+		json_object *first = json_object_array_get_idx(bars, 0);
+		bar->id = strdup(json_object_get_string(first));
+		json_object_put(bars);
+		free(res);
+		sway_log(SWAY_INFO, "Using first bar config: %s. "
+				"Use --bar_id to manually select a different bar configuration.",
+				bar->id);
+	}
+
 	uint32_t len = strlen(bar->id);
 	char *res = ipc_single_command(bar->ipc_socketfd,
 			IPC_GET_BAR_CONFIG, bar->id, &len);
diff --git a/swaybar/main.c b/swaybar/main.c
index e1b0cecac..c2020ff09 100644
--- a/swaybar/main.c
+++ b/swaybar/main.c
@@ -72,12 +72,6 @@ int main(int argc, char **argv) {
 		sway_log_init(SWAY_INFO, NULL);
 	}
 
-	if (!swaybar.id) {
-		sway_log(SWAY_ERROR, "No bar_id passed. "
-				"Provide --bar_id or let sway start swaybar");
-		return 1;
-	}
-
 	if (!socket_path) {
 		socket_path = get_socketpath();
 		if (!socket_path) {
diff --git a/swaybar/tray/item.c b/swaybar/tray/item.c
index 12929743b..af9b5cde3 100644
--- a/swaybar/tray/item.c
+++ b/swaybar/tray/item.c
@@ -66,17 +66,17 @@ static int read_pixmap(sd_bus_message *msg, struct swaybar_sni *sni,
 		}
 
 		const void *pixels;
-		size_t npixels;
-		ret = sd_bus_message_read_array(msg, 'y', &pixels, &npixels);
+		size_t pixel_data_size; // size in bytes, each pixel is 4 bytes
+		ret = sd_bus_message_read_array(msg, 'y', &pixels, &pixel_data_size);
 		if (ret < 0) {
 			sway_log(SWAY_ERROR, "%s %s: %s", sni->watcher_id, prop, strerror(-ret));
 			goto error;
 		}
 
-		if (height > 0 && width == height) {
+		if (height > 0 && width == height && (size_t)width * height <= pixel_data_size / 4) {
 			sway_log(SWAY_DEBUG, "%s %s: found icon w:%d h:%d", sni->watcher_id, prop, width, height);
 			struct swaybar_pixmap *pixmap =
-				malloc(sizeof(struct swaybar_pixmap) + npixels);
+				malloc(sizeof(struct swaybar_pixmap) + pixel_data_size);
 			pixmap->size = height;
 
 			// convert from network byte order to host byte order