Tags

Tags give the ability to mark specific points in history as being important

  • meow-patchset-v1.161.0rc1

    1dd6e604 · MSC4311: Use full PDU's in stripped state (like `invite_room_state`) over... ·

  • v1.161.0rc1

    2b20fa30 · Move deprecation to deprecation section · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.161/CHANGES.md
    Unverified

  • v1.160.0

    92fb8a06 · 1.160.0 · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.160/CHANGES.md
    Unverified

  • v1.160.0rc2

    955d0cf7 · 1.160.0rc2 · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.160/CHANGES.md
    Unverified

  • v1.160.0rc1

    d27933f1 · Remove specific example source that doesn't read well · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.160/CHANGES.md
    Unverified

  • meow-patchset-v1.159.0

    e1579d17 · MSC4311: Use full PDU's in stripped state (like `invite_room_state`) over... ·

  • v1.159.0

    7b10e6b9 · Move package notice back · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.159/CHANGES.md
    Unverified

  • v1.159.0rc1

    e08ffd28 · Remove already released changes (already in Synapse 1.158.0) · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.159/CHANGES.md
    Unverified

  • meow-patchset-v1.158.0

    b383f7c5 · Implement MSC4437: Endpoint to replace entire profile ·

  • v1.158.0

    7a3e98b6 · 1.158.0 · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.158/CHANGES.md
    Unverified

  • v1.158.0rc1

    e4644ae2 · Remove duplicated punctuation · 
    Changelog: https://github.com/element-hq/synapse/blob/release-v1.158/CHANGES.md
    Unverified

  • v1.157.2

    0c709bbb · 1.157.2 · 
    This security release addresses several vulnerabilities.

Please upgrade when you can, particularly if your homeserver participates in open federation
and/or has untrusted local users.

High severity:

- Fix [ELEMENTSEC-2026-1071](https://github.com/element-hq/synapse/security/advisories/GHSA-fp53-rw9v-hcf9)
- Fix [ELEMENTSEC-2024-1520](https://github.com/element-hq/synapse/security/advisories/GHSA-rgv2-84w7-5j9p)
- Fix [ELEMENTSEC-2026-1717](https://github.com/element-hq/synapse/security/advisories/GHSA-27p5-4f45-gx76)
- Fix [ELEMENTSEC-2026-1721](https://github.com/element-hq/synapse/security/advisories/GHSA-95fh-hv8c-chvq)
- Fix [ELEMENTSEC-2026-1729](https://github.com/element-hq/synapse/security/advisories/GHSA-cjh7-rcpx-xpf8)
- Fix [ELEMENTSEC-2026-1740](https://github.com/element-hq/synapse/security/advisories/GHSA-6wjm-9p2x-gvpm)

Moderate severity:

- Fix [ELEMENTSEC-2026-1714](https://github.com/element-hq/synapse/security/advisories/GHSA-qcjr-46gf-7f4r)
- Fix [ELEMENTSEC-2026-1718](https://github.com/element-hq/synapse/security/advisories/GHSA-r66v-qhwx-8rg4)
- Fix [ELEMENTSEC-2026-1751](https://github.com/element-hq/synapse/security/advisories/GHSA-jhcg-5392-5mjw)

Low severity:

- Fix [ELEMENTSEC-2026-1703](https://github.com/element-hq/synapse/security/advisories/GHSA-vh4c-pqh4-w3wq)
- Fix [ELEMENTSEC-2026-1760](https://github.com/element-hq/synapse/security/advisories/GHSA-hgcg-p9gx-fq5f)
    Unverified

  • v1.157.1

    2b5a0623 · 1.157.1 · 
    - Fix config regression around falsy `experimental_features` no longer being accepted. ([\#19987](https://github.com/element-hq/synapse/issues/19987))
    Unverified

  • meow-patchset-v1.157.0

    c5c6acfa · Implement MSC4437: Endpoint to replace entire profile ·

  • v1.157.0

    e0f251ce · 1.157.0 · 
    - [MSC4140: Cancellable delayed events](https://github.com/matrix-org/matrix-spec-proposals/pull/4140): Limit how many delayed events a user may have scheduled at once. ([\#19539](https://github.com/element-hq/synapse/issues/19539))
- Support [MSC4446](https://github.com/matrix-org/matrix-spec-proposals/pull/4446) for moving fully read markers backwards. Contributed by @SpiritCroc @ Beeper. ([\#19663](https://github.com/element-hq/synapse/issues/19663))
- Add before and after time filters to the ['Redact events of a user'](https://element-hq.github.io/synapse/v1.157/admin_api/user_admin_api.html#redact-events-of-a-user) Admin API. ([\#19802](https://github.com/element-hq/synapse/issues/19802))
- Updated experimental support for [MSC4388: Secure out-of-band channel for sign in with QR](https://github.com/matrix-org/matrix-spec-proposals/pull/4388). ([\#19808](https://github.com/element-hq/synapse/issues/19808))
- Add an `exclude_rooms_from_presence` configuration option to stop presence being routed between users solely because they share one of the listed rooms. ([\#19935](https://github.com/element-hq/synapse/issues/19935))

- [MSC4140: Cancellable delayed events](https://github.com/matrix-org/matrix-spec-proposals/pull/4140): Update error responses to match their format in the current draft of the MSC. ([\#19539](https://github.com/element-hq/synapse/issues/19539))
- Lock Sliding Sync connections when inserting lazy members, to prevent repeated deadlocks. ([\#19826](https://github.com/element-hq/synapse/issues/19826))
- Fix the `flag_existing_quarantined_media` background update skipping some quarantined remote media. Introduced in v1.152.0. ([\#19901](https://github.com/element-hq/synapse/issues/19901))
- Fix a bug introduced in Synapse v1.150.0 where reactivating a deactivated and erased user did not restore their profile, breaking login, name changes, and invitations.
  Contributed by @m4us1ne. ([\#19902](https://github.com/element-hq/synapse/issues/19902))
- Fix a regression where application services that opted into ephemeral events using the legacy `de.sorunome.msc2409.push_ephemeral` registration flag stopped receiving ephemeral events (including to-device messages used for encryption). Introduced in v1.156.0. ([\#19928](https://github.com/element-hq/synapse/issues/19928))
- Fix a bug causing device list pruning to skip some rows when the transaction gets retried. ([\#19947](https://github.com/element-hq/synapse/issues/19947))
- Fix presence states being shown to clients forever after presence is disabled, by marking any previously only users as offline. ([\#19948](https://github.com/element-hq/synapse/issues/19948))
- Fix `SYNAPSE_ASYNC_IO_REACTOR=1` on Python 3.14. ([\#19949](https://github.com/element-hq/synapse/issues/19949))

- Remove support for experimental [MSC3861](https://github.com/matrix-org/matrix-spec-proposals/pull/3861) auth delegation, in favour of the stable Matrix Authentication Service integration support. See [the upgrade notes](https://element-hq.github.io/synapse/v1.157/upgrade.html#upgrading-to-v11570). ([\#19895](https://github.com/element-hq/synapse/issues/19895))

- Port the synchronous core of client event serialization to Rust. ([\#19837](https://github.com/element-hq/synapse/issues/19837), [\#19922](https://github.com/element-hq/synapse/issues/19922))
- Update `HomeserverTestCase.get_success(...)` and friends to drive async Rust (Tokio runtime/thread pool). ([\#19871](https://github.com/element-hq/synapse/issues/19871), [\#19879](https://github.com/element-hq/synapse/issues/19879))
- Allow Rust code to have database access via Python database connection pool. ([\#19878](https://github.com/element-hq/synapse/issues/19878))
- Add `golangci-lint` to CI. ([\#19888](https://github.com/element-hq/synapse/issues/19888))
- Remove wall-clock dependency of `test_redact_messages_all_rooms` test, as this caused flakiness. ([\#19890](https://github.com/element-hq/synapse/issues/19890))
- Change the [MSC3814](https://github.com/matrix-org/matrix-spec-proposals/pull/3814) dehydrated device `/events` endpoint from `POST` to `GET`. ([\#19896](https://github.com/element-hq/synapse/issues/19896))
- Change the [MSC3814](https://github.com/matrix-org/matrix-spec-proposals/pull/3814) dehydrated device `/events` endpoint paging to match spec conventions. ([\#19897](https://github.com/element-hq/synapse/issues/19897))
- Fix storage type mismatches where values were bound with a type that didn't match their database column. ([\#19911](https://github.com/element-hq/synapse/issues/19911))
- Speed up deletion of old sliding sync connections by adding an index. ([\#19912](https://github.com/element-hq/synapse/issues/19912))
- Add note to 3PID email token request unit tests that the endpoint being tested can have an expected, artificial delay of up to 1s. ([\#19916](https://github.com/element-hq/synapse/issues/19916))
- Add an index to `sliding_sync_connection_lazy_members` to speed up deleting old sliding sync connection positions. ([\#19923](https://github.com/element-hq/synapse/issues/19923))
- Fix `test_lock_contention` being flaky when running against PostgreSQL by budgeting CPU time rather than wall-clock time. ([\#19929](https://github.com/element-hq/synapse/issues/19929))
- Fix Complement test flake when restarting Synapse workers (cross-test pollution caused by nginx upstreams being temporarily unavailable). ([\#19936](https://github.com/element-hq/synapse/issues/19936))
- Add clean deploy `FIXME` note for `TestOIDCProviderUnavailable` (problem tracked by [#19937](https://github.com/element-hq/synapse/issues/19937)). ([\#19938](https://github.com/element-hq/synapse/issues/19938))
- Minor presence performance improvements for large servers. ([\#19939](https://github.com/element-hq/synapse/issues/19939))
- Reduce replication traffic caused by presence. ([\#19941](https://github.com/element-hq/synapse/issues/19941))
- Add `last_active_granularity`, `sync_online_timeout` and `idle_timeout` options to the `presence` config section to allow tuning the presence state machine timers. ([\#19942](https://github.com/element-hq/synapse/issues/19942))
    Unverified

  • v1.157.0rc1

    e1420bec · Linkify 'Redact events of a user' docs · 
    Please check [the relevant section in the upgrade notes](https://github.com/element-hq/synapse/blob/develop/docs/upgrade.md#upgrading-to-v11570) as this release removes support for the deprecated MSC3861 Auth Delegation (`experimental_features.msc3861`).

- [MSC4140: Cancellable delayed events](https://github.com/matrix-org/matrix-spec-proposals/pull/4140): Limit how many delayed events a user may have scheduled at once. ([\#19539](https://github.com/element-hq/synapse/issues/19539))
- Support [MSC4446](https://github.com/matrix-org/matrix-spec-proposals/pull/4446) for moving fully read markers backwards. Contributed by @SpiritCroc @ Beeper. ([\#19663](https://github.com/element-hq/synapse/issues/19663))
- Add before and after time filters to the ['Redact events of a user'](https://element-hq.github.io/synapse/v1.157/admin_api/user_admin_api.html#redact-events-of-a-user) Admin API. ([\#19802](https://github.com/element-hq/synapse/issues/19802))
- Updated experimental support for [MSC4388: Secure out-of-band channel for sign in with QR](https://github.com/matrix-org/matrix-spec-proposals/pull/4388). ([\#19808](https://github.com/element-hq/synapse/issues/19808))
- Add an `exclude_rooms_from_presence` configuration option to stop presence being routed between users solely because they share one of the listed rooms. ([\#19935](https://github.com/element-hq/synapse/issues/19935))

- [MSC4140: Cancellable delayed events](https://github.com/matrix-org/matrix-spec-proposals/pull/4140): Update error responses to match their format in the current draft of the MSC. ([\#19539](https://github.com/element-hq/synapse/issues/19539))
- Lock Sliding Sync connections when inserting lazy members, to prevent repeated deadlocks. ([\#19826](https://github.com/element-hq/synapse/issues/19826))
- Fix the `flag_existing_quarantined_media` background update skipping some quarantined remote media. Introduced in v1.152.0. ([\#19901](https://github.com/element-hq/synapse/issues/19901))
- Fix a bug introduced in Synapse v1.150.0 where reactivating a deactivated and erased user did not restore their profile, breaking login, name changes, and invitations.
  Contributed by @m4us1ne. ([\#19902](https://github.com/element-hq/synapse/issues/19902))
- Fix a regression where application services that opted into ephemeral events using the legacy `de.sorunome.msc2409.push_ephemeral` registration flag stopped receiving ephemeral events (including to-device messages used for encryption). Introduced in v1.156.0. ([\#19928](https://github.com/element-hq/synapse/issues/19928))
- Fix a bug causing device list pruning to skip some rows when the transaction gets retried. ([\#19947](https://github.com/element-hq/synapse/issues/19947))
- Fix presence states being shown to clients forever after presence is disabled, by marking any previously only users as offline. ([\#19948](https://github.com/element-hq/synapse/issues/19948))
- Fix `SYNAPSE_ASYNC_IO_REACTOR=1` on Python 3.14. ([\#19949](https://github.com/element-hq/synapse/issues/19949))

- Remove support for experimental [MSC3861](https://github.com/matrix-org/matrix-spec-proposals/pull/3861) auth delegation, in favour of the stable Matrix Authentication Service integration support. See [the upgrade notes](https://element-hq.github.io/synapse/v1.157/upgrade.html#upgrading-to-v11570). ([\#19895](https://github.com/element-hq/synapse/issues/19895))

- Port the synchronous core of client event serialization to Rust. ([\#19837](https://github.com/element-hq/synapse/issues/19837), [\#19922](https://github.com/element-hq/synapse/issues/19922))
- Update `HomeserverTestCase.get_success(...)` and friends to drive async Rust (Tokio runtime/thread pool). ([\#19871](https://github.com/element-hq/synapse/issues/19871), [\#19879](https://github.com/element-hq/synapse/issues/19879))
- Allow Rust code to have database access via Python database connection pool. ([\#19878](https://github.com/element-hq/synapse/issues/19878))
- Add `golangci-lint` to CI. ([\#19888](https://github.com/element-hq/synapse/issues/19888))
- Remove wall-clock dependency of `test_redact_messages_all_rooms` test, as this caused flakiness. ([\#19890](https://github.com/element-hq/synapse/issues/19890))
- Change the [MSC3814](https://github.com/matrix-org/matrix-spec-proposals/pull/3814) dehydrated device `/events` endpoint from `POST` to `GET`. ([\#19896](https://github.com/element-hq/synapse/issues/19896))
- Change the [MSC3814](https://github.com/matrix-org/matrix-spec-proposals/pull/3814) dehydrated device `/events` endpoint paging to match spec conventions. ([\#19897](https://github.com/element-hq/synapse/issues/19897))
- Fix storage type mismatches where values were bound with a type that didn't match their database column. ([\#19911](https://github.com/element-hq/synapse/issues/19911))
- Speed up deletion of old sliding sync connections by adding an index. ([\#19912](https://github.com/element-hq/synapse/issues/19912))
- Add note to 3PID email token request unit tests that the endpoint being tested can have an expected, artificial delay of up to 1s. ([\#19916](https://github.com/element-hq/synapse/issues/19916))
- Add an index to `sliding_sync_connection_lazy_members` to speed up deleting old sliding sync connection positions. ([\#19923](https://github.com/element-hq/synapse/issues/19923))
- Fix `test_lock_contention` being flaky when running against PostgreSQL by budgeting CPU time rather than wall-clock time. ([\#19929](https://github.com/element-hq/synapse/issues/19929))
- Fix Complement test flake when restarting Synapse workers (cross-test pollution caused by nginx upstreams being temporarily unavailable). ([\#19936](https://github.com/element-hq/synapse/issues/19936))
- Add clean deploy `FIXME` note for `TestOIDCProviderUnavailable` (problem tracked by [#19937](https://github.com/element-hq/synapse/issues/19937)). ([\#19938](https://github.com/element-hq/synapse/issues/19938))
- Minor presence performance improvements for large servers. ([\#19939](https://github.com/element-hq/synapse/issues/19939))
- Reduce replication traffic caused by presence. ([\#19941](https://github.com/element-hq/synapse/issues/19941))
- Add `last_active_granularity`, `sync_online_timeout` and `idle_timeout` options to the `presence` config section to allow tuning the presence state machine timers. ([\#19942](https://github.com/element-hq/synapse/issues/19942))
    Unverified

  • v1.156.0

    be8d9004 · 1.156.0 · 
    No significant changes since 1.156.0rc1.

- Expose [MSC4354 Sticky Events](https://github.com/matrix-org/matrix-spec-proposals/pull/4354) over [MSC4186 (Simplified) Sliding Sync](https://github.com/matrix-org/matrix-spec-proposals/pull/4186). ([\#19591](https://github.com/element-hq/synapse/issues/19591))
- Stabilize support for sending ephemeral events to application services, as per [MSC2409](https://github.com/matrix-org/matrix-spec-proposals/pull/2409). Contributed by @jason-famedly @ Famedly. ([\#19758](https://github.com/element-hq/synapse/issues/19758))
- Include `allowed_room_ids` in the `/summary` client-server API response for rooms with restricted join rules, as required by Matrix 1.15.
  Contributed by @FrenchGithubUser @Famedly. ([\#19762](https://github.com/element-hq/synapse/issues/19762))
- [MSC4140: Cancellable delayed events](https://github.com/matrix-org/matrix-spec-proposals/pull/4140): Allow authentication on delayed event management endpoints (such as `/restart`) to bypass ratelimits for unauthenticated requests based on the client IP address. ([\#19794](https://github.com/element-hq/synapse/issues/19794))
- Add new metric `synapse_non_deactivated_user_count` which tracks the number of non-deactivated users in the database, split by `app_service`. ([\#19848](https://github.com/element-hq/synapse/issues/19848))
- The `GET /_matrix/client/unstable/org.matrix.msc1763/retention/configuration` endpoint is now provided when retention
  is enabled and `experimental_features.msc1763_enabled` is enabled, based on
  [MSC1763](https://github.com/matrix-org/matrix-spec-proposals/pull/1763). ([\#19853](https://github.com/element-hq/synapse/issues/19853))
- Add experimental support for [MSC4491: Invite reasons in room creation](https://github.com/matrix-org/matrix-spec-proposals/pull/4491). ([\#19874](https://github.com/element-hq/synapse/issues/19874))

- Provide remote servers a way to find out about an event created during the remote join handshake. Contributed by @FrenchGithubUser and @jason-famedly @ Famedly. ([\#19390](https://github.com/element-hq/synapse/issues/19390), [\#19855](https://github.com/element-hq/synapse/issues/19855), [\#19856](https://github.com/element-hq/synapse/issues/19856))
- Advertise `org.matrix.msc4143` in `unstable_features` when `msc4143_enabled` is set. ([\#19646](https://github.com/element-hq/synapse/issues/19646))
- Fix a long-standing bug where the badge notification count for a room could become permanently inflated if a read receipt was sent before the room's notification counts were first summarised. ([\#19785](https://github.com/element-hq/synapse/issues/19785))
- Fix startup listener logging to report the actual bound TCP port, so listeners configured with port `0` no longer log `Synapse now listening on TCP port 0`. ([\#19810](https://github.com/element-hq/synapse/issues/19810))
- Fix notification counts being inflated after a `/purge_history` when notifications had already been rotated into the summary table. ([\#19834](https://github.com/element-hq/synapse/issues/19834))
- Fix `/sync` caching transient errors for the `sync_response_cache_duration`. ([\#19845](https://github.com/element-hq/synapse/issues/19845))
- Fix local events being deleted by the [Purge History admin API](https://element-hq.github.io/synapse/v1.155/admin_api/purge_history_api.html) despite `delete_local_events` being set to false, in room versions other than 1 and 2. ([\#19850](https://github.com/element-hq/synapse/issues/19850))
- Fix a bug where a user's dehydrated device ([MSC3814](https://github.com/matrix-org/matrix-spec-proposals/pull/3814)) was deleted when their device list was synced from Matrix Authentication Service (e.g. upon logging out their last device), breaking offline key delivery. ([\#19892](https://github.com/element-hq/synapse/issues/19892))

- Update `auto_join_rooms` config documentation to cover requirements for auto-joining invite-only rooms. ([\#19660](https://github.com/element-hq/synapse/issues/19660))
- Add stable endpoint for [MSC3266: Room summary API](https://github.com/matrix-org/matrix-spec-proposals/pull/3266) into worker docs. Contributed by @olmari. ([\#19788](https://github.com/element-hq/synapse/issues/19788))
- Tweak wording of Rust crate dependency update policy. ([\#19829](https://github.com/element-hq/synapse/issues/19829))
- Fixed the Admin API user endpoint documentation examples to use JSON booleans (true/false) instead of numeric (0/1) values. ([\#19847](https://github.com/element-hq/synapse/issues/19847))

- Make `simple_select_one_onecol_txn()` more helpful by naming the table of the select - as all other query wrapper functions already did. ([\#19869](https://github.com/element-hq/synapse/issues/19869))
- Refactor `get_user_which_could_invite` logic to reuse `get_users_which_can_issue_invite`. Contributed by Noah Markert. ([\#19732](https://github.com/element-hq/synapse/issues/19732))
- Fix a flaky test (`twisted.protocols.amp.TooLong` error under `trial -jN`) caused by an oversized debug log line. ([\#19832](https://github.com/element-hq/synapse/issues/19832))
- Upload Complement test logs as CI artifacts instead of printing the raw output to the build log. ([\#19840](https://github.com/element-hq/synapse/issues/19840))
- Fix release script considering any workflow completion as successful. ([\#19843](https://github.com/element-hq/synapse/issues/19843))
- Force keyword-args for clear `default_config(server_name="test")` usage in test utilities. ([\#19849](https://github.com/element-hq/synapse/issues/19849))
- Add `.ruff_cache/` directory to `.gitignore`. ([\#19854](https://github.com/element-hq/synapse/issues/19854))
- Bump `poetry` in CI from `2.2.1` to `2.4.1`. ([\#19866](https://github.com/element-hq/synapse/issues/19866), [\#19877](https://github.com/element-hq/synapse/issues/19877))
- Split out `deferred` and `tokio_runtime` to their own Rust modules. ([\#19868](https://github.com/element-hq/synapse/issues/19868))
- Prevent the `cargo-test` and `cargo-bench` CI jobs from being skipped, even on PRs that have Rust changes. ([\#19883](https://github.com/element-hq/synapse/issues/19883))
    Unverified

  • meow-patchset-v1.156.0rc1

    853ede2e · Implement MSC4437: Endpoint to replace entire profile ·

  • v1.156.0rc1

    fd8f0e53 · Tweak changelog · 
    - Expose [MSC4354 Sticky Events](https://github.com/matrix-org/matrix-spec-proposals/pull/4354) over [MSC4186 (Simplified) Sliding Sync](https://github.com/matrix-org/matrix-spec-proposals/pull/4186). ([\#19591](https://github.com/element-hq/synapse/issues/19591))
- Stabilize support for sending ephemeral events to application services, as per [MSC2409](https://github.com/matrix-org/matrix-spec-proposals/pull/2409). Contributed by @jason-famedly @ Famedly. ([\#19758](https://github.com/element-hq/synapse/issues/19758))
- Include `allowed_room_ids` in the `/summary` client-server API response for rooms with restricted join rules, as required by Matrix 1.15.
  Contributed by @FrenchGithubUser @Famedly. ([\#19762](https://github.com/element-hq/synapse/issues/19762))
- [MSC4140: Cancellable delayed events](https://github.com/matrix-org/matrix-spec-proposals/pull/4140): Allow authentication on delayed event management endpoints (such as `/restart`) to bypass ratelimits for unauthenticated requests based on the client IP address. ([\#19794](https://github.com/element-hq/synapse/issues/19794))
- Add new metric `synapse_non_deactivated_user_count` which tracks the number of non-deactivated users in the database, split by `app_service`. ([\#19848](https://github.com/element-hq/synapse/issues/19848))
- The `GET /_matrix/client/unstable/org.matrix.msc1763/retention/configuration` endpoint is now provided when retention
  is enabled and `experimental_features.msc1763_enabled` is enabled, based on
  [MSC1763](https://github.com/matrix-org/matrix-spec-proposals/pull/1763). ([\#19853](https://github.com/element-hq/synapse/issues/19853))
- Add experimental support for [MSC4491: Invite reasons in room creation](https://github.com/matrix-org/matrix-spec-proposals/pull/4491). ([\#19874](https://github.com/element-hq/synapse/issues/19874))

- Provide remote servers a way to find out about an event created during the remote join handshake. Contributed by @FrenchGithubUser and @jason-famedly @ Famedly. ([\#19390](https://github.com/element-hq/synapse/issues/19390), [\#19855](https://github.com/element-hq/synapse/issues/19855), [\#19856](https://github.com/element-hq/synapse/issues/19856))
- Advertise `org.matrix.msc4143` in `unstable_features` when `msc4143_enabled` is set. ([\#19646](https://github.com/element-hq/synapse/issues/19646))
- Fix a long-standing bug where the badge notification count for a room could become permanently inflated if a read receipt was sent before the room's notification counts were first summarised. ([\#19785](https://github.com/element-hq/synapse/issues/19785))
- Fix startup listener logging to report the actual bound TCP port, so listeners configured with port `0` no longer log `Synapse now listening on TCP port 0`. ([\#19810](https://github.com/element-hq/synapse/issues/19810))
- Fix notification counts being inflated after a `/purge_history` when notifications had already been rotated into the summary table. ([\#19834](https://github.com/element-hq/synapse/issues/19834))
- Fix `/sync` caching transient errors for the `sync_response_cache_duration`. ([\#19845](https://github.com/element-hq/synapse/issues/19845))
- Fix local events being deleted by the [Purge History admin API](https://element-hq.github.io/synapse/v1.155/admin_api/purge_history_api.html) despite `delete_local_events` being set to false, in room versions other than 1 and 2. ([\#19850](https://github.com/element-hq/synapse/issues/19850))
- Fix a bug where a user's dehydrated device ([MSC3814](https://github.com/matrix-org/matrix-spec-proposals/pull/3814)) was deleted when their device list was synced from Matrix Authentication Service (e.g. upon logging out their last device), breaking offline key delivery. ([\#19892](https://github.com/element-hq/synapse/issues/19892))

- Update `auto_join_rooms` config documentation to cover requirements for auto-joining invite-only rooms. ([\#19660](https://github.com/element-hq/synapse/issues/19660))
- Add stable endpoint for [MSC3266: Room summary API](https://github.com/matrix-org/matrix-spec-proposals/pull/3266) into worker docs. Contributed by @olmari. ([\#19788](https://github.com/element-hq/synapse/issues/19788))
- Tweak wording of Rust crate dependency update policy. ([\#19829](https://github.com/element-hq/synapse/issues/19829))
- Fixed the Admin API user endpoint documentation examples to use JSON booleans (true/false) instead of numeric (0/1) values. ([\#19847](https://github.com/element-hq/synapse/issues/19847))

- Make `simple_select_one_onecol_txn()` more helpful by naming the table of the select - as all other query wrapper functions already did. ([\#19869](https://github.com/element-hq/synapse/issues/19869))
- Refactor `get_user_which_could_invite` logic to reuse `get_users_which_can_issue_invite`. Contributed by Noah Markert. ([\#19732](https://github.com/element-hq/synapse/issues/19732))
- Fix a flaky test (`twisted.protocols.amp.TooLong` error under `trial -jN`) caused by an oversized debug log line. ([\#19832](https://github.com/element-hq/synapse/issues/19832))
- Upload Complement test logs as CI artifacts instead of printing the raw output to the build log. ([\#19840](https://github.com/element-hq/synapse/issues/19840))
- Fix release script considering any workflow completion as successful. ([\#19843](https://github.com/element-hq/synapse/issues/19843))
- Force keyword-args for clear `default_config(server_name="test")` usage in test utilities. ([\#19849](https://github.com/element-hq/synapse/issues/19849))
- Add `.ruff_cache/` directory to `.gitignore`. ([\#19854](https://github.com/element-hq/synapse/issues/19854))
- Bump `poetry` in CI from `2.2.1` to `2.4.1`. ([\#19866](https://github.com/element-hq/synapse/issues/19866), [\#19877](https://github.com/element-hq/synapse/issues/19877))
- Split out `deferred` and `tokio_runtime` to their own Rust modules. ([\#19868](https://github.com/element-hq/synapse/issues/19868))
- Prevent the `cargo-test` and `cargo-bench` CI jobs from being skipped, even on PRs that have Rust changes. ([\#19883](https://github.com/element-hq/synapse/issues/19883))
    Unverified

  • v1.155.0

    3fad6368 · 1.155.0 · 
    The next version of Synapse will not include Debian packages for Debian 12 Bookworm
as it reached end of life on the 10th of June 2026.

- When building releases, don't cancel Debian package builds when one of them fails. ([\#19842](https://github.com/element-hq/synapse/issues/19842))

- Limit the to-device EDU size to a reasonable value to mitigate long queues of to-device messages preventing outgoing federation because of the size of the transaction. ([\#19617](https://github.com/element-hq/synapse/issues/19617))
- Work around bug that sometimes breaks joining restricted rooms that require a remote join. Contributed by @tulir @ Beeper. ([\#19730](https://github.com/element-hq/synapse/issues/19730))
- Update Sliding Sync to return a new response immediately if a room subscription has changed and produced a new response. ([\#19734](https://github.com/element-hq/synapse/issues/19734), [\#19792](https://github.com/element-hq/synapse/issues/19792))
- Fix the `/capabilities` endpoint returning a 500 error on non-media workers when [MSC4452: Preview URL capabilities API](https://github.com/matrix-org/matrix-spec-proposals/pull/4452) is enabled. ([\#19839](https://github.com/element-hq/synapse/issues/19839))

- Document how to see Rust build failure output when using `poetry install`. ([\#19818](https://github.com/element-hq/synapse/issues/19818))
- Document that the SQLite version included in Ubuntu LTS, aside from ESM-only versions, is included in our support policy. ([\#19823](https://github.com/element-hq/synapse/issues/19823))

- Port the Python Event classes to Rust. ([\#19701](https://github.com/element-hq/synapse/issues/19701), [\#19816](https://github.com/element-hq/synapse/issues/19816), [\#19817](https://github.com/element-hq/synapse/issues/19817), [\#19819](https://github.com/element-hq/synapse/issues/19819))
- Added tests to ensure that email notification links are sanitized. Contributed by Noah Markert. ([\#19741](https://github.com/element-hq/synapse/issues/19741))
- Add `GcpJsonFormatter` logging formatter for use with Google Cloud Logging and GKE deployments. ([\#19775](https://github.com/element-hq/synapse/issues/19775))
- Add more logging to the to-device message replication stream. ([\#19801](https://github.com/element-hq/synapse/issues/19801), [\#19821](https://github.com/element-hq/synapse/issues/19821))
- Port `Requester` class to Rust. ([\#19828](https://github.com/element-hq/synapse/issues/19828))
    Unverified