diff --git a/CHANGES.md b/CHANGES.md
index 5eabc424a7..bd8b40bab3 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,16 @@
+# Synapse 1.158.0 (2026-08-04)
+
+## Deprecations and Removals
+
+- Remove package build targets for Ubuntu 25.10 'Questing Quokka' (end-of-life 2026-07-01). ([\#20039](https://github.com/element-hq/synapse/issues/20039))
+
+## Internal Changes
+
+- Add package build targets for Ubuntu 26.04 'Resolute Raccoon'. ([\#20039](https://github.com/element-hq/synapse/issues/20039))
+
+
+
+
 # Synapse 1.158.0rc1 (2026-07-30)
 
 ## Features
diff --git a/debian/changelog b/debian/changelog
index 16527b136f..a92e6d7ce6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.158.0) stable; urgency=medium
+
+  * New synapse release 1.158.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 04 Aug 2026 17:52:05 +0000
+
 matrix-synapse-py3 (1.158.0~rc1) stable; urgency=medium
 
   * New synapse release 1.158.0rc1.
diff --git a/pyproject.toml b/pyproject.toml
index 5f452adeab..a7f8b124e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "matrix-synapse"
-version = "1.158.0rc1"
+version = "1.158.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 readme = "README.rst"
 authors = [