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The Play Team is delighted to announce the release of Play 2.9.11! 🎉

:green_book: About this Release

This release fixes several bugs and addresses reported security vulnerabilities (CVEs) in play-ws and - as always - updates dependencies. We strongly recommend upgrading at your earliest convenience.

If you're considering upgrading to Play 2.9, please check the Play 2.9 release announcement for highlights and further details on how to migrate. Many projects have already smoothly upgraded to Play 2.9.

Noteworthy Pull Request

  • play-ws got upgraded to fix CVEs
  • [#13938] [2.9.x] switch away from deprecated UpgradeToWebSocket (backport [#13763]) by @pjfanning
  • [#13937] [2.9.x] avoid using deprecated way to create Akka ParserSettings (backport [#13748]) by @pjfanning
  • [#13936] [2.9.x] support akka.http.server.enable-http2 (backport [#13750]) by @pjfanning

Following pull requests got merged for this release:

  • [#13941] [2.9.x] Patch updates by @scala-steward
  • [#13939] [2.9.x] Patch updates by @scala-steward
  • [#13921] [2.9.x] Patch updates by @mkurz
  • [#13917] [2.9.x] Patch updates by @scala-steward
  • [#13916] [2.9.x] netty-codec-http, netty-handler, ... 4.1.133.Final (was 4.1.132.Final) by @scala-steward
  • [#13910] [2.9.x] Patch updates by @scala-steward
  • [#13909] [2.9.x] hibernate-core 6.6.50.Final (was 6.6.49.Final) by @scala-steward
  • [#13907] [2.9.x] Patch updates by @scala-steward
  • [#13903] [2.9.x] Patch updates by @scala-steward
  • [#13901] [2.9.x] commons-io 2.22.0 (was 2.21.0) by @scala-steward
  • [#13938] [2.9.x] switch away from deprecated UpgradeToWebSocket (backport [#13763]) by @pjfanning
  • [#13937] [2.9.x] avoid using deprecated way to create Akka ParserSettings (backport [#13748]) by @pjfanning
  • [#13936] [2.9.x] support akka.http.server.enable-http2 (backport [#13750]) by @pjfanning
  • [#13890] [2.9.x] sbt-java-formatter 0.12.0 (was 0.11.0) by @scala-steward
  • [#13888] [2.9.x] hibernate-core 6.6.49.Final (was 6.6.48.Final) by @scala-steward
  • [#13881] [2.9.x] scalafmt-core 3.11.0 (was 3.10.7) by @scala-steward
  • [#13880] [2.9.x] sbt-scalafmt 2.6.0 (was 2.5.6) by @scala-steward
  • [#13879] [2.9.x] hibernate-core 6.6.48.Final (was 6.6.47.Final) by @scala-steward
  • [#13878] [2.9.x] release drafter v7 by @mkurz
  • [#13859] [2.9.x] lz4-java 1.11.0 (was 1.10.4) by @scala-steward
  • [#13839] [2.9.x] Patch updates by @scala-steward
  • [#13836] [2.9.x] hibernate-core 6.6.47.Final (was 6.6.46.Final) by @scala-steward
  • [#13833] [2.9.x] sbt-java-formatter 0.11.0 (was 0.10.0) by @scala-steward
  • [#13831] [2.9.x] hibernate-core 6.6.46.Final (was 6.6.45.Final) by @scala-steward
  • [#13827] [2.9.x] netty-codec-http, netty-handler, ... 4.1.132.Final (was 4.1.131.Final) by @scala-steward
  • [#13828] [2.9.x] Patch updates by @scala-steward
  • [#13787] [2.9.x] Patch updates by @scala-steward
  • [#13811] [2.9.x] Bump release-drafter/release-drafter from 6 to 7 by @dependabot[bot]
  • [#13820] [2.9.x] hibernate-core 6.6.45.Final (was 6.6.44.Final) by @scala-steward
  • [#13794] [2.9.x] hibernate-core 6.6.44.Final (was 6.6.43.Final) by @scala-steward
  • [#13789] [2.9.x] hibernate-core 6.6.43.Final (was 6.6.42.Final) by @scala-steward
  • [#13785] [2.9.x] Patch updates by @scala-steward
  • [#13781] [2.9.x] Patch updates by @scala-steward
  • [#13774] [2.9.x] Patch updates by @scala-steward
  • [#13772] [2.9.x] netty-codec-http, netty-handler, ... 4.1.131.Final (was 4.1.130.Final) by @scala-steward
  • [#13770] [2.9.x] Patch updates by @scala-steward
  • [#13765] [2.9.x] Patch updates by @scala-steward
  • [#13764] [2.9.x] hibernate-core 6.6.42.Final (was 6.6.41.Final) by @scala-steward
  • [#13759] [2.9.x] Patch updates by @scala-steward
  • [#13756] [2.9.x] Patch updates by @scala-steward
  • [#13755] [2.9.x] hibernate-core 6.6.41.Final (was 6.6.40.Final) by @scala-steward
  • [#13751] [2.9.x] Patch updates by @scala-steward
  • [#13739] [2.9.x] Patch updates by @scala-steward
  • [#13738] [2.9.x] sbt 1.12.0 (backport [#13737]) by @mkurz
  • [#13734] [2.9.x] Patch updates by @scala-steward
  • [#13729] [2.9.x] Patch updates by @scala-steward
  • [#13720] [2.9.x] hibernate-core 6.6.40.Final (was 6.6.39.Final) by @scala-steward
  • [#13721] [2.9.x] Patch updates by @scala-steward
  • [#13726] [2.9.x] Pin byte-buddy by @mkurz

For more details see the full list of changes and the 2.9.11 milestone.

:heart: Thanks to our premium sponsors!

If you find this OSS project useful for work, please consider asking your company to support it by becoming a sponsor. You can also individually sponsor the project by becoming a backer.

:bow: Thanks to our contributors

Finally, thanks to the community for their help with detailed bug reports, discussions about new features and pull request reviews. This project is only possible due to the help we had from amazing contributors. Special thanks to all code contributors who helped with this particular release (they are listed below)!

Source: README.md, updated 2026-05-20