diff --git a/CHANGES.md b/CHANGES.md
index d9a95f8e72..9984efc99e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,10 @@
+# Synapse 1.139.0 (2025-09-30)
+
+No significant changes since 1.139.0rc3.
+
+
+
+
 # Synapse 1.139.0rc3 (2025-09-25)
 
 ## Bugfixes
diff --git a/debian/changelog b/debian/changelog
index 8f8877638a..f3a2314dca 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.139.0) stable; urgency=medium
+
+  * New Synapse release 1.139.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 30 Sep 2025 11:58:55 +0100
+
 matrix-synapse-py3 (1.139.0~rc3) stable; urgency=medium
 
   * New Synapse release 1.139.0rc3.
diff --git a/pyproject.toml b/pyproject.toml
index 7f58386087..0f886a6b6a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -101,7 +101,7 @@ module-name = "synapse.synapse_rust"
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.139.0rc3"
+version = "1.139.0"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "AGPL-3.0-or-later"