Symfony Releases 7.4.16 and 8.1.4 Maintenance Updates

Two maintenance releases for Symfony arrived on 7 August 2026 while Drupal core was working across the framework’s 7.4 and 8.1 branches. Symfony published 7.4.16 and 8.1.4 as bug-fix releases, and its weekly roundup for 3–9 August listed both versions. Neither release introduced a new Symfony feature line.

Drupal 11.4 uses Symfony 7.4, while Drupal core’s main branch moved to Symfony 8.1 on 28 July 2026 as part of Drupal 12 preparation. The two releases therefore landed on framework branches tied to different stages of Drupal core. Drupal’s release schedule now places Drupal 12.0.0 in the week of 7 December 2026.

The Symfony 8.1 upgrade issue records a move from 8.0 components to 8.1.1 across packages including Console, DependencyInjection, HttpFoundation, HttpKernel, Serializer, Validator, and several development dependencies. The change was committed to main on 28 July, and contributors noted Symfony deprecations that would need follow-up work. The issue documents the 8.1.1 baseline at the time of the upgrade, not adoption of Symfony 8.1.4 itself.

Symfony 7.4.16 fixed issues in HttpKernel, DependencyInjection, Serializer, DoctrineBridge, Lock, and other components. Symfony 8.1.4 carried many overlapping fixes and added changes including Guzzle 8 compatibility in HttpClient and Messenger fixes for undecodable retries and PostgreSQL worker blocking. Symfony’s release notes do not identify Drupal-specific bugs in either maintenance release.

Drupal’s dependency policy says Drupal 12.0 will use the latest suitable Symfony 8 minor available at release time, with Symfony 8.2 identified as the likely fit for a December release. Symfony schedules Symfony 8.2 for November 2026, so 8.1 remains a development baseline rather than a confirmed final dependency for Drupal 12.0.0. Since the 7 August releases, Symfony has also published 7.4.17 and 8.1.5 on 22 August 2026, meaning 7.4.16 and 8.1.4 are no longer the latest patches in their respective lines.