diff --git a/CHANGELOG.md b/CHANGELOG.md
index 185cbb5307..cf2a8f5422 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-## [0.5.0] - Unreleased
+## [0.5.0] - 2022-11-20
 
 ### Added
 
diff --git a/pyproject.toml b/pyproject.toml
index bf55b935bd..56cdb4b801 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "0.4.0"
+version = "0.5.0"
 homepage = "https://github.com/Textualize/textual"
 description = "Modern Text User Interface framework"
 authors = ["Will McGugan <will@textualize.io>"]
diff --git a/src/textual/app.py b/src/textual/app.py
index 0e22d3869c..27fbc352aa 100644
--- a/src/textual/app.py
+++ b/src/textual/app.py
@@ -2011,7 +2011,7 @@ async def _prune_node(self, root: Widget) -> None:
         for children in reversed(node_children):
             # Closing children can be done asynchronously.
             close_messages = [
-                child._close_messages() for child in children if child._running
+                child._close_messages(wait=True) for child in children if child._running
             ]
             # TODO: What if a message pump refuses to exit?
             if close_messages:
@@ -2019,7 +2019,7 @@ async def _prune_node(self, root: Widget) -> None:
                 for child in children:
                     self._unregister(child)
 
-        await root._close_messages()
+        await root._close_messages(wait=False)
         self._unregister(root)
 
     async def action_check_bindings(self, key: str) -> None:
diff --git a/src/textual/message_pump.py b/src/textual/message_pump.py
index 615ec07429..9d28f738b5 100644
--- a/src/textual/message_pump.py
+++ b/src/textual/message_pump.py
@@ -284,7 +284,7 @@ def _close_messages_no_wait(self) -> None:
     async def _on_close_messages(self, message: messages.CloseMessages) -> None:
         await self._close_messages()
 
-    async def _close_messages(self) -> None:
+    async def _close_messages(self, wait: bool = True) -> None:
         """Close message queue, and optionally wait for queue to finish processing."""
         if self._closed or self._closing:
             return
@@ -296,7 +296,7 @@ async def _close_messages(self) -> None:
         await self._message_queue.put(events.Unmount(sender=self))
         Reactive._reset_object(self)
         await self._message_queue.put(None)
-        if self._task is not None and asyncio.current_task() != self._task:
+        if wait and self._task is not None and asyncio.current_task() != self._task:
             # Ensure everything is closed before returning
             await self._task