diff --git a/CHANGES.md b/CHANGES.md
index 10d8dcc928..38213bd2ff 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,7 @@
+# Synapse 1.156.0 (2026-07-07)
+
+No significant changes since 1.156.0rc1.
+
 # Synapse 1.156.0rc1 (2026-06-30)
 
 ## Features
diff --git a/debian/changelog b/debian/changelog
index a60203b68b..c1522f068d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.156.0) stable; urgency=medium
+
+  * New Synapse release 1.156.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 07 Jul 2026 14:20:22 +0100
+
 matrix-synapse-py3 (1.156.0~rc1) stable; urgency=medium
 
   * Bump poetry from 2.2.1 to 2.4.1.
diff --git a/pyproject.toml b/pyproject.toml
index 1e31b23d8a..6023740d6c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "matrix-synapse"
-version = "1.156.0rc1"
+version = "1.156.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 readme = "README.rst"
 authors = [