diff --git a/CHANGES.md b/CHANGES.md
index 39c30798fa2e..d3dcd0ed2ef4 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,10 +1,12 @@
-<<<<<<< HEAD
-Synapse 1.50.2 (2022-01-24)
+Synapse 1.51.0 (2022-01-25)
 ===========================
-=======
+
+No significant changes since 1.51.0rc2.
+
+Synapse 1.51.0 deprecates `webclient` listeners and non-HTTP(S) `web_client_location`s. Support for these will be removed in Synapse 1.53.0, at which point Synapse will not be capable of directly serving a web client for Matrix.
+
 Synapse 1.51.0rc2 (2022-01-24)
 ==============================
->>>>>>> v1.51.0rc2
 
 Bugfixes
 --------
@@ -12,8 +14,6 @@ Bugfixes
 - Fix a bug introduced in Synapse 1.40.0 that caused Synapse to fail to process incoming federation traffic after handling a large amount of events in a v1 room. ([\#11806](https://github.com/matrix-org/synapse/issues/11806))
 
 
-<<<<<<< HEAD
-=======
 Synapse 1.51.0rc1 (2022-01-21)
 ==============================
 
@@ -62,7 +62,7 @@ Deprecations and Removals
 - Remove the unstable `/send_relation` endpoint. ([\#11682](https://github.com/matrix-org/synapse/issues/11682))
 - Remove `python_twisted_reactor_pending_calls` Prometheus metric. ([\#11724](https://github.com/matrix-org/synapse/issues/11724))
 - Remove the `password_hash` field from the response dictionaries of the [Users Admin API](https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html). ([\#11576](https://github.com/matrix-org/synapse/issues/11576))
-- Deprecate support for `webclient` listeners and non-HTTP(S) `web_client_location` configuration. ([\#11774](https://github.com/matrix-org/synapse/issues/11774), [\#11783](https://github.com/matrix-org/synapse/issues/11783))
+- **Deprecate support for `webclient` listeners and non-HTTP(S) `web_client_location` configuration. ([\#11774](https://github.com/matrix-org/synapse/issues/11774), [\#11783](https://github.com/matrix-org/synapse/issues/11783))**
 
 
 Internal Changes
@@ -89,7 +89,6 @@ Internal Changes
 - Add some comments and type annotations for `_update_outliers_txn`. ([\#11776](https://github.com/matrix-org/synapse/issues/11776))
 
 
->>>>>>> v1.51.0rc2
 Synapse 1.50.1 (2022-01-18)
 ===========================
 
diff --git a/debian/changelog b/debian/changelog
index 92c51aad5938..3a598c4148c9 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.51.0) stable; urgency=medium
+
+  * New synapse release 1.51.0.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 25 Jan 2022 11:28:51 +0000
+
 matrix-synapse-py3 (1.51.0~rc2) stable; urgency=medium
 
   * New synapse release 1.51.0~rc2.
diff --git a/synapse/__init__.py b/synapse/__init__.py
index ef859c9deddb..26bdfec33ae3 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -47,7 +47,7 @@
 except ImportError:
     pass
 
-__version__ = "1.51.0rc2"
+__version__ = "1.51.0"
 
 if bool(os.environ.get("SYNAPSE_TEST_PATCH_LOG_CONTEXTS", False)):
     # We import here so that we don't have to install a bunch of deps when