diff --git a/CHANGES.md b/CHANGES.md
index 5ac373686..83bb9dd6b 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,16 @@
+# synapse 1.143.0 (2025-11-25)
+
+## Dropping support for PostgreSQL 13
+
+In line with our [deprecation policy](https://github.com/element-hq/synapse/blob/develop/docs/deprecation_policy.md), we've dropped
+support for PostgreSQL 13, as it is no longer supported upstream.
+This release of Synapse requires PostgreSQL 14+.
+
+No significant changes since 1.143.0rc2.
+
+
+
+
 # synapse 1.143.0rc2 (2025-11-18)
 
 ## Dropping support for PostgreSQL 13
diff --git a/debian/changelog b/debian/changelog
index 24b23ad52..f8cf0c86f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.143.0) stable; urgency=medium
+
+  * New Synapse release 1.143.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 25 Nov 2025 08:44:56 -0700
+
 matrix-synapse-py3 (1.143.0~rc2) stable; urgency=medium
 
   * New Synapse release 1.143.0rc2.
diff --git a/pyproject.toml b/pyproject.toml
index 3e2382336..246a1d283 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "matrix-synapse"
-version = "1.143.0rc2"
+version = "1.143.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 readme = "README.rst"
 authors = [