Merge branch 'release-v1.153' into develop

CHANGES.md

@@ -1,3 +1,10 @@
+# Synapse 1.153.0rc3 (2026-05-15)
+
+## Bugfixes
+
+- Revert 'Have [MSC4186: Simplified Sliding Sync](https://github.com/matrix-org/matrix-spec-proposals/pull/4186) return a new response immediately if a room subscription has changed and produced a new response. ([\#19714](https://github.com/element-hq/synapse/issues/19714))' (introduced in 1.153.0rc1) due to performance problems. ([\#19784](https://github.com/element-hq/synapse/issues/19784))
+
+
 # Synapse 1.153.0rc2 (2026-05-13)
 
 ## Bugfixes

debian/changelog

@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.153.0~rc3) stable; urgency=medium
+
+  * New Synapse release 1.153.0rc3.
+
+ -- Synapse Packaging team <packages@matrix.org>  Fri, 15 May 2026 11:42:29 +0100
+
 matrix-synapse-py3 (1.153.0~rc2) stable; urgency=medium
 
   * New Synapse release 1.153.0rc2.

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "matrix-synapse"
-version = "1.153.0rc2"
+version = "1.153.0rc3"
 description = "Homeserver for the Matrix decentralised comms protocol"
 readme = "README.rst"
 authors = [