Synapse 1.138.0rc1 (2025-09-02)

Features

• Support for the stable endpoint and scopes of MSC3861 & co. (#18549)

Bugfixes

• Improve database performance of MSC4293 - Redact on Kick/Ban. (#18851)
• Do not throw an error when fetching a rejected delayed state event on startup. (#18858)

Improved Documentation

• Fix worker documentation incorrectly indicating all room Admin API requests were capable of being handled by workers. (#18853)

Internal Changes

• Instrument _ByteProducer with tracing to measure potential dead time while writing bytes to the request. (#18804)
• Switch to OpenTracing's ContextVarsScopeManager instead of our own custom LogContextScopeManager. (#18849)
• Trace how much work is being done while "recursively fetching redactions". (#18854)
• Link upstream Twisted bug tracking the problem that explains why we have to use a Producer to write bytes to the request. (#18855)
• Introduce EventPersistencePair type. (#18857)

Updates to locked dependencies

• Bump actions/add-to-project from c0c5949b017d0d4a39f7ba888255881bdac2a823 to 4515659e2b458b27365e167605ac44f219494b66. (#18863)
• Bump actions/checkout from 4.3.0 to 5.0.0. (#18834)
• Bump anyhow from 1.0.98 to 1.0.99. (#18841)
• Bump docker/login-action from 3.4.0 to 3.5.0. (#18835)
• Bump dtolnay/rust-toolchain from b3b07ba8b418998c39fb20f53e8b695cdcc8de1b to e97e2d8cc328f1b50210efc529dca0028893a2d9. (#18862)
• Bump phonenumbers from 9.0.11 to 9.0.12. (#18837)
• Bump regex from 1.11.1 to 1.11.2. (#18864)
• Bump reqwest from 0.12.22 to 0.12.23. (#18842)
• Bump ruff from 0.12.7 to 0.12.10. (#18865)
• Bump serde_json from 1.0.142 to 1.0.143. (#18866)
• Bump types-bleach from 6.2.0.20250514 to 6.2.0.20250809. (#18838)
• Bump types-jsonschema from 4.25.0.20250720 to 4.25.1.20250822. (#18867)
• Bump types-psycopg2 from 2.9.21.20250718 to 2.9.21.20250809. (#18836)