diff --git a/schemata/config-v1.json b/schemata/config-v1.json
index bf5b358..68eff9f 100644
--- a/schemata/config-v1.json
+++ b/schemata/config-v1.json
@@ -5,6 +5,9 @@
 				"kind": {
 					"const": "cocoa",
 					"default": "cocoa",
+					"enum": [
+						"cocoa"
+					],
 					"title": "Kind",
 					"type": "string"
 				}
@@ -49,14 +52,28 @@
 		"WebsocketsReceiverConfig": {
 			"properties": {
 				"host": {
+					"anyOf": [
+						{
+							"format": "hostname",
+							"type": "string"
+						},
+						{
+							"items": {
+								"format": "hostname",
+								"type": "string"
+							},
+							"type": "array"
+						}
+					],
 					"description": "The hostname you'd like your WebSockets server to listen on. In most cases the default behaviour, which binds to all network interfaces, will be fine.",
-					"format": "hostname",
-					"title": "Host",
-					"type": "string"
+					"title": "Host"
 				},
 				"kind": {
 					"const": "websockets",
 					"default": "websockets",
+					"enum": [
+						"websockets"
+					],
 					"title": "Kind",
 					"type": "string"
 				},
diff --git a/schemata/playback-v1.json b/schemata/playback-v1.json
index 29c2300..58b7244 100644
--- a/schemata/playback-v1.json
+++ b/schemata/playback-v1.json
@@ -136,6 +136,9 @@
 						},
 						{
 							"const": "oneshot",
+							"enum": [
+								"oneshot"
+							],
 							"type": "string"
 						}
 					],
@@ -169,6 +172,9 @@
 						},
 						{
 							"const": "oneshot",
+							"enum": [
+								"oneshot"
+							],
 							"type": "string"
 						}
 					],
@@ -322,6 +328,9 @@
 				"state": {
 					"const": "stop",
 					"default": "stop",
+					"enum": [
+						"stop"
+					],
 					"title": "State",
 					"type": "string"
 				}
diff --git a/src/mpd_now_playable/config/model.py b/src/mpd_now_playable/config/model.py
index a112042..0fde2d1 100644
--- a/src/mpd_now_playable/config/model.py
+++ b/src/mpd_now_playable/config/model.py
@@ -35,7 +35,7 @@ class WebsocketsReceiverConfig(BaseReceiverConfig):
 	#: The hostname you'd like your WebSockets server to listen on. In most
 	#: cases the default behaviour, which binds to all network interfaces, will
 	#: be fine.
-	host: Optional[Host] = None
+	host: Optional[Host | tuple[Host, ...]] = None
 
 
 ReceiverConfig = Annotated[
diff --git a/src/mpd_now_playable/receivers/websockets/receiver.py b/src/mpd_now_playable/receivers/websockets/receiver.py
index d218f35..a125b6b 100644
--- a/src/mpd_now_playable/receivers/websockets/receiver.py
+++ b/src/mpd_now_playable/receivers/websockets/receiver.py
@@ -2,7 +2,7 @@ from pathlib import Path
 
 import ormsgpack
 from websockets import broadcast
-from websockets.asyncio.server import Server, ServerConnection, serve
+from websockets.server import WebSocketServerProtocol, serve
 from yarl import URL
 
 from ...config.model import WebsocketsReceiverConfig
@@ -24,11 +24,12 @@ def default(value: object) -> object:
 class WebsocketsReceiver(Receiver):
 	config: WebsocketsReceiverConfig
 	player: Player
-	server: Server
+	connections: set[WebSocketServerProtocol]
 	last_status: bytes = MSGPACK_NULL
 
 	def __init__(self, config: WebsocketsReceiverConfig):
 		self.config = config
+		self.connections = set()
 
 	@classmethod
 	def loop_factory(cls) -> DefaultLoopFactory:
@@ -36,14 +37,18 @@ class WebsocketsReceiver(Receiver):
 
 	async def start(self, player: Player) -> None:
 		self.player = player
-		self.server = await serve(
+		await serve(
 			self.handle, host=self.config.host, port=self.config.port, reuse_port=True
 		)
 
-	async def handle(self, conn: ServerConnection) -> None:
+	async def handle(self, conn: WebSocketServerProtocol) -> None:
+		self.connections.add(conn)
 		await conn.send(self.last_status)
-		await conn.wait_closed()
+		try:
+			await conn.wait_closed()
+		finally:
+			self.connections.remove(conn)
 
 	async def update(self, playback: Playback) -> None:
 		self.last_status = ormsgpack.packb(playback, default=default)
-		broadcast(self.server.connections, self.last_status)
+		broadcast(self.connections, self.last_status)