Synapse 1.144.0 (2025-12-09)

Deprecation of MacOS Python wheels

The team has decided to deprecate and stop publishing python wheels for MacOS as of this release. Synapse docker images will continue to work on MacOS, as will building Synapse from source (though note this requires a Rust compiler).

Unstable mutual rooms endpoint is now behind an experimental feature flag

Admins using the unstable MSC2666 endpoint (/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms), please check the relevant section in the upgrade notes as this release contains changes that disable that endpoint by default.

No significant changes since 1.144.0rc1.

Synapse 1.144.0rc1 (2025-12-02)

Features

Add experimental implementation of MSC4380 (invite blocking). (#19203)
Allow restarting delayed event timeouts on workers. (#19207)

Bugfixes

Fix a bug in the database function for fetching state deltas that could result in unnecessarily long query times. (#18960)
Fix v12 rooms when running with use_frozen_dicts: True. (#19235)
Fix bug where invalid canonical_alias content would return 500 instead of 400. (#19240)
Fix bug where Duration was logged incorrectly. (#19267)

Improved Documentation

Document in the --config-path help how multiple files are merged - by merging them shallowly. (#19243)

Deprecations and Removals

Stop building release wheels for MacOS. (#19225)

Internal Changes

Improve event filtering for Simplified Sliding Sync. (#17782)
Export SYNAPSE_SUPPORTED_COMPLEMENT_TEST_PACKAGES environment variable from scripts-dev/complement.sh. (#19208)
Refactor scripts-dev/complement.sh logic to avoid exit to facilitate being able to source it from other scripts (composable). (#19209)
Expire sliding sync connections that are too old or have too much pending data. (#19211)
Require an experimental feature flag to be enabled in order for the unstable MSC2666 endpoint (/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms) to be available. (#19219)
Prevent changelog check CI running on @dependabot's PRs even when a human has modified the branch. (#19220)
Auto-fix trailing spaces in multi-line strings and comments when running the lint script. (#19221)
Move towards using a dedicated Duration type. (#19223, #19229)
Improve robustness of the SQL schema linting in CI. (#19224)
Add log to determine whether clients are using /messages as expected. (#19226)
Simplify README and add ESS Getting started section. (#19228, #19259)
Add a unit test for ensuring associated refresh tokens are erased when a device is deleted. (#19230)
Prompt user to consider adding future deprecations to the changelog in release script. (#19239)
Fix check of the Rust compiled code being outdated when using source checkout and .egg-info. (#19251)
Stop building MacOS wheels in CI pipeline. (#19263)

Updates to locked dependencies

Bump Swatinem/rust-cache from 2.8.1 to 2.8.2. (#19244)
Bump actions/checkout from 5.0.0 to 6.0.0. (#19213)
Bump actions/setup-go from 6.0.0 to 6.1.0. (#19214)
Bump actions/setup-python from 6.0.0 to 6.1.0. (#19245)
Bump attrs from 25.3.0 to 25.4.0. (#19215)
Bump docker/metadata-action from 5.9.0 to 5.10.0. (#19246)
Bump http from 1.3.1 to 1.4.0. (#19249)
Bump pydantic from 2.12.4 to 2.12.5. (#19250)
Bump pyopenssl from 25.1.0 to 25.3.0. (#19248)
Bump rpds-py from 0.28.0 to 0.29.0. (#19216)
Bump rpds-py from 0.29.0 to 0.30.0. (#19247)
Bump sentry-sdk from 2.44.0 to 2.46.0. (#19218)
Bump types-bleach from 6.2.0.20250809 to 6.3.0.20251115. (#19217)
Bump types-jsonschema from 4.25.1.20250822 to 4.25.1.20251009. (#19252)

element-hq/synapse v1.144.0 on GitHub