diff --git a/CHANGES.md b/CHANGES.md
index 4f0318970e..5485e8d47e 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,10 +1,14 @@
 Synapse 1.54.0rc1 (2022-03-02)
 ==============================
 
+Please note that this will be the last release of Synapse that is compatible with Mjolnir 1.3.1 and earlier.
+Administrators of servers which have the Mjolnir module installed are advised to upgrade Mjolnir to version 1.3.2 or later.
+
+
 Features
 --------
 
-- Add support for MSC3202: sending one-time key counts and fallback key usage states to Application Services. ([\#11617](https://github.com/matrix-org/synapse/issues/11617))
+- Add support for [MSC3202](https://github.com/matrix-org/matrix-doc/pull/3202): sending one-time key counts and fallback key usage states to Application Services. ([\#11617](https://github.com/matrix-org/synapse/issues/11617))
 - Make a `POST` to `/rooms/<room_id>/receipt/m.read/<event_id>` only trigger a push notification if the count of unread messages is different to the one in the last successfully sent push. ([\#11835](https://github.com/matrix-org/synapse/issues/11835))
 - Fetch images when previewing Twitter URLs. Contributed by @AndrewRyanChama. ([\#11985](https://github.com/matrix-org/synapse/issues/11985))
 - Track cache invalidations in Prometheus metrics, as already happens for cache eviction based on size or time. ([\#12000](https://github.com/matrix-org/synapse/issues/12000))
@@ -22,8 +26,8 @@ Bugfixes
 
 - Fix a bug introduced in Synapse v1.48.0 where an edit of the latest event in a thread would not be properly applied to the thread summary. ([\#11992](https://github.com/matrix-org/synapse/issues/11992))
 - Fix long standing bug where `get_rooms_for_user` was not correctly invalidated for remote users when the server left a room. ([\#11999](https://github.com/matrix-org/synapse/issues/11999))
-- Fix 500 error with Postgres when looking backwards with the [MSC3030](https://github.com/matrix-org/matrix-doc/pull/3030) `/timestamp_to_event?dir=b` endpoint. ([\#12024](https://github.com/matrix-org/synapse/issues/12024))
-- Properly fix a long-standing bug where wrong data could be inserted in the `event_search` table when using sqlite. This could block running `synapse_port_db` with an "argument of type 'int' is not iterable" error. This bug was partially fixed by a change in Synapse 1.44.0. ([\#12037](https://github.com/matrix-org/synapse/issues/12037))
+- Fix a 500 error with Postgres when looking backwards with the [MSC3030](https://github.com/matrix-org/matrix-doc/pull/3030) `/timestamp_to_event?dir=b` endpoint. ([\#12024](https://github.com/matrix-org/synapse/issues/12024))
+- Properly fix a long-standing bug where wrong data could be inserted into the `event_search` table when using SQLite. This could block running `synapse_port_db` with an "argument of type 'int' is not iterable" error. This bug was partially fixed by a change in Synapse 1.44.0. ([\#12037](https://github.com/matrix-org/synapse/issues/12037))
 - Fix slow performance of `/logout` in some cases where refresh tokens are in use. The slowness existed since the initial implementation of refresh tokens. ([\#12056](https://github.com/matrix-org/synapse/issues/12056))
 - Fix a long-standing bug where Synapse would make additional failing requests over federation for missing data. ([\#12077](https://github.com/matrix-org/synapse/issues/12077))
 - Fix occasional 'Unhandled error in Deferred' error message. ([\#12089](https://github.com/matrix-org/synapse/issues/12089))
@@ -35,7 +39,7 @@ Bugfixes
 Updates to the Docker image
 ---------------------------
 
-- The docker image no longer automatically creates a temporary volume at `/data`. This is not expected to affect normal usage. ([\#11997](https://github.com/matrix-org/synapse/issues/11997))
+- The Docker image no longer automatically creates a temporary volume at `/data`. This is not expected to affect normal usage. ([\#11997](https://github.com/matrix-org/synapse/issues/11997))
 - Use Python 3.9 in Docker images by default. ([\#12112](https://github.com/matrix-org/synapse/issues/12112))
 
 
@@ -59,35 +63,35 @@ Deprecations and Removals
 Internal Changes
 ----------------
 
-- Make method `get_room_version` use cached `get_room_version_id`. ([\#11808](https://github.com/matrix-org/synapse/issues/11808))
-- Remove unnecessary condition on knock->leave auth rule check. ([\#11900](https://github.com/matrix-org/synapse/issues/11900))
+- Make the `get_room_version` method use `get_room_version_id` to benefit from caching. ([\#11808](https://github.com/matrix-org/synapse/issues/11808))
+- Remove unnecessary condition on knock -> leave auth rule check. ([\#11900](https://github.com/matrix-org/synapse/issues/11900))
 - Add tests for device list changes between local users. ([\#11972](https://github.com/matrix-org/synapse/issues/11972))
-- Optimise calculating device_list changes in `/sync`. ([\#11974](https://github.com/matrix-org/synapse/issues/11974))
+- Optimise calculating `device_list` changes in `/sync`. ([\#11974](https://github.com/matrix-org/synapse/issues/11974))
 - Add missing type hints to storage classes. ([\#11984](https://github.com/matrix-org/synapse/issues/11984))
 - Refactor the search code for improved readability. ([\#11991](https://github.com/matrix-org/synapse/issues/11991))
 - Move common deduplication code down into `_auth_and_persist_outliers`. ([\#11994](https://github.com/matrix-org/synapse/issues/11994))
 - Limit concurrent joins from applications services. ([\#11996](https://github.com/matrix-org/synapse/issues/11996))
 - Preparation for faster-room-join work: when parsing the `send_join` response, get the `m.room.create` event from `state`, not `auth_chain`. ([\#12005](https://github.com/matrix-org/synapse/issues/12005), [\#12039](https://github.com/matrix-org/synapse/issues/12039))
-- Preparation for faster-room-join work: parse msc3706 fields in send_join response. ([\#12011](https://github.com/matrix-org/synapse/issues/12011))
+- Preparation for faster-room-join work: parse MSC3706 fields in send_join response. ([\#12011](https://github.com/matrix-org/synapse/issues/12011))
 - Preparation for faster-room-join work: persist information on which events and rooms have partial state to the database. ([\#12012](https://github.com/matrix-org/synapse/issues/12012))
 - Preparation for faster-room-join work: Support for calling `/federation/v1/state` on a remote server. ([\#12013](https://github.com/matrix-org/synapse/issues/12013))
 - Configure `tox` to use `venv` rather than `virtualenv`. ([\#12015](https://github.com/matrix-org/synapse/issues/12015))
 - Fix bug in `StateFilter.return_expanded()` and add some tests. ([\#12016](https://github.com/matrix-org/synapse/issues/12016))
 - Use Matrix v1.1 endpoints (`/_matrix/client/v3/auth/...`) in fallback auth HTML forms. ([\#12019](https://github.com/matrix-org/synapse/issues/12019))
 - Update the `olddeps` CI job to use an old version of `markupsafe`. ([\#12025](https://github.com/matrix-org/synapse/issues/12025))
-- Upgrade mypy to version 0.931. ([\#12030](https://github.com/matrix-org/synapse/issues/12030))
+- Upgrade Mypy to version 0.931. ([\#12030](https://github.com/matrix-org/synapse/issues/12030))
 - Remove legacy `HomeServer.get_datastore()`. ([\#12031](https://github.com/matrix-org/synapse/issues/12031), [\#12070](https://github.com/matrix-org/synapse/issues/12070))
 - Minor typing fixes. ([\#12034](https://github.com/matrix-org/synapse/issues/12034), [\#12069](https://github.com/matrix-org/synapse/issues/12069))
 - After joining a room, create a dedicated logcontext to process the queued events. ([\#12041](https://github.com/matrix-org/synapse/issues/12041))
 - Tidy up GitHub Actions config which builds distributions for PyPI. ([\#12051](https://github.com/matrix-org/synapse/issues/12051))
 - Move configuration out of `setup.cfg`. ([\#12052](https://github.com/matrix-org/synapse/issues/12052), [\#12059](https://github.com/matrix-org/synapse/issues/12059))
 - Fix error message when a worker process fails to talk to another worker process. ([\#12060](https://github.com/matrix-org/synapse/issues/12060))
-- Fix using the complement.sh script without specifying a dir or a branch. Contributed by Nico on behalf of Famedly. ([\#12063](https://github.com/matrix-org/synapse/issues/12063))
+- Fix using the `complement.sh` script without specifying a directory or a branch. Contributed by Nico on behalf of Famedly. ([\#12063](https://github.com/matrix-org/synapse/issues/12063))
 - Add type hints to `tests/rest/client`. ([\#12066](https://github.com/matrix-org/synapse/issues/12066), [\#12072](https://github.com/matrix-org/synapse/issues/12072), [\#12084](https://github.com/matrix-org/synapse/issues/12084), [\#12094](https://github.com/matrix-org/synapse/issues/12094))
 - Add some logging to `/sync` to try and track down #11916. ([\#12068](https://github.com/matrix-org/synapse/issues/12068))
 - Inspect application dependencies using `importlib.metadata` or its backport. ([\#12088](https://github.com/matrix-org/synapse/issues/12088))
-- User `assertEqual` instead of the deprecated `assertEquals` in test code. ([\#12092](https://github.com/matrix-org/synapse/issues/12092))
-- Move experimental support for [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440) to /versions. ([\#12099](https://github.com/matrix-org/synapse/issues/12099))
+- Use `assertEqual` instead of the deprecated `assertEquals` in test code. ([\#12092](https://github.com/matrix-org/synapse/issues/12092))
+- Move experimental support for [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440) to `/versions`. ([\#12099](https://github.com/matrix-org/synapse/issues/12099))
 - Add `stop_cancellation` utility function to stop `Deferred`s from being cancelled. ([\#12106](https://github.com/matrix-org/synapse/issues/12106))
 - Improve exception handling for concurrent execution. ([\#12109](https://github.com/matrix-org/synapse/issues/12109))
 - Advertise support for Python 3.10 in packaging files. ([\#12111](https://github.com/matrix-org/synapse/issues/12111))