diff --git a/CHANGES.md b/CHANGES.md
index b30ea24b0d..5f72855bc0 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,12 @@
+# Synapse 1.142.1 (2025-11-18)
+
+## Bugfixes
+
+- Fixed a bug introduced in v1.142.0 preventing subpaths in MAS endpoints from working. ([\#19186](https://github.com/element-hq/synapse/issues/19186))
+
+
+
+
 # Synapse 1.142.0 (2025-11-11)
 
 ## Dropped support for Python 3.9
diff --git a/debian/changelog b/debian/changelog
index 1c3b9dff46..e0b6cfecea 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.142.1) stable; urgency=medium
+
+  * New Synapse release 1.142.1.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 18 Nov 2025 12:25:23 -0700
+
 matrix-synapse-py3 (1.142.0) stable; urgency=medium
 
   * New Synapse release 1.142.0.
diff --git a/pyproject.toml b/pyproject.toml
index 68f723463c..0b339be8d1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -291,6 +291,13 @@ manifest-path = "rust/Cargo.toml"
 module-name = "synapse.synapse_rust"
 
 [tool.poetry]
+name = "matrix-synapse"
+version = "1.142.1"
+description = "Homeserver for the Matrix decentralised comms protocol"
+authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
+license = "AGPL-3.0-or-later OR LicenseRef-Element-Commercial"
+readme = "README.rst"
+repository = "https://github.com/element-hq/synapse"
 packages = [
     { include = "synapse" },
 ]