diff --git a/CHANGES.md b/CHANGES.md
index 14fafc260d..8790812f8e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,12 @@
+Synapse 1.66.0rc2 (2022-08-30)
+==============================
+
+Bugfixes
+--------
+
+- Fix rate limit gauge metrics registering twice and misreporting (`synapse_rate_limit_sleep_affected_hosts`, `synapse_rate_limit_reject_affected_hosts`). ([\#13649](https://github.com/matrix-org/synapse/issues/13649))
+
+
 Synapse 1.66.0rc1 (2022-08-23)
 ==============================
 
diff --git a/changelog.d/13649.bugfix b/changelog.d/13649.bugfix
deleted file mode 100644
index e6513a585a..0000000000
--- a/changelog.d/13649.bugfix
+++ /dev/null
@@ -1 +0,0 @@
-Fix rate limit gauge metrics registering twice and misreporting (`synapse_rate_limit_sleep_affected_hosts`, `synapse_rate_limit_reject_affected_hosts`).
diff --git a/debian/changelog b/debian/changelog
index c3974261a9..b42c99d81a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+matrix-synapse-py3 (1.66.0~rc2) stable; urgency=medium
+
+  * New Synapse release 1.66.0rc2.
+
+ -- Synapse Packaging team <packages@matrix.org>  Tue, 30 Aug 2022 12:25:19 +0100
+
 matrix-synapse-py3 (1.66.0~rc1) stable; urgency=medium
 
   * New Synapse release 1.66.0rc1.
diff --git a/pyproject.toml b/pyproject.toml
index 745b6067aa..7146897837 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,7 +54,7 @@ skip_gitignore = true
 
 [tool.poetry]
 name = "matrix-synapse"
-version = "1.66.0rc1"
+version = "1.66.0rc2"
 description = "Homeserver for the Matrix decentralised comms protocol"
 authors = ["Matrix.org Team and Contributors <packages@matrix.org>"]
 license = "Apache-2.0"