Nightly

Code Refactoring

• Improve string handling and encoding in ModuleGenerator and AbstractHttpCommandCodec #15309 (Alex Popov)

Commits

• b1d3522: Update mirror info (Sun Dec 7 00:26:48 UTC 2025) (Selenium CI Bot)
• 534566c: [dotnet] Modernize EnvironmentManager, standardize assembly teardown (#15551) (Michael Render) #15551
• c7f70e7: Update mirror info (Sun Dec 7 12:08:44 UTC 2025) (Selenium CI Bot)
• a855017: use the right AssertJ class Assertions instead of AssertionsForClassTypes (Andrei Solntsev) #16684
• 794820d: use the right AssertJ method assertThatThrownBy instead of error-prone construct "try/fail/catch(expected)". (Andrei Solntsev) #16684
• ec555e9: use better AssertJ assertion for collection size (Andrei Solntsev) #16684
• 61f251e: use better AssertJ assertion for Optionals and AtomicIntegers (Andrei Solntsev) #16684
• 28f0f1d: [ci]: bump cargo lockfile (#16698) (Navin Chandra) #16698
• cfbeed8: [java][BiDi] change emulation commands return type to void (Delta456) #16699

Selenium 4.39.0

Detailed Changelogs by Component

Java     |     Python     |     DotNet     |     Ruby     |     JavaScript

What's Changed

Click to see all the changes included in this release

• [atoms] fix text node children are always considered as displayed #16284 by @joerg1985 in #16329
• [grid] Enhance UI with theme integration and improved status indicators by @VietND96 in #16512
• [py][bidi]: add emulation command - set_locale_override by @navin772 in #16504
• [py][bidi]: add emulation command set_scripting_enabled by @navin772 in #16513
• [py] Update docstrings to google pydoc format by @iampopovich in #16511
• [java][BiDi] implement browsingContext.downloadEnd event by @Delta456 in #16347
• Fix typo and minor formatting changes in README.md by @cgoldberg in #16523
• [py] Update docstrings (remove reST leftovers and resolve D200) by @iampopovich in #16525
• [py] Fix docstring formatting and apply ruff linting rules by @cgoldberg in #16527
• [py] Fix Ruff D417 warnings in docstrings by @iampopovich in #16535
• [py] Fix ruff D415 warnings in docstrings by @cgoldberg in #16536
• [py][bidi]: add set_screen_orientation_override command in Emulation by @navin772 in #16522
• [py] Fix D205 ruff warnings for docstrings and add type hints by @iampopovich in #16537
• [py][bidi]: add set_download_behavior command by @navin772 in #16556
• [py] Bump pytest and dev dependencies by @cgoldberg in #16572
• [bazel] Move rules_rust to bzlmod by @shs96c in #16566
• [ci] Make a PR for updating mirror file instead of pushing directly to trunk by @bonigarcia in #16579
• [ci] Update mirror info (2025-11-11T15:26:46Z) by @github-actions[bot] in #16578
• [ci] Revert latest changes related to the mirror workflow by @bonigarcia in #16580
• [java]: refactor request interception tests and handle CORS by @navin772 in #16585
• [py][bidi]: enable download event tests for firefox by @navin772 in #16587
• [py] Fix more type annotations by @iampopovich in #16551
• [java][BiDi] implement emulation.setTimezoneOverride by @Delta456 in #16530
• [grid] Minimum Docker API 1.44 for Docker Engine v29+ in Dynamic Grid by @VietND96 in #16591
• Show file modification time by @asolntsev in #16589
• [py][bidi]: add emulation command set_user_agent_override by @navin772 in #16595
• [grid] Improve Docker client for Dynamic Grid by @VietND96 in #16596
• [py]: reuse driver in case of bidi tests by @navin772 in #16597
• [grid] Improve browser container labels and naming in Dynamic Grid by @VietND96 in #16599
• [build] Upgrade rules_dotnet to 0.20.5 by @nvborisenko in #16592
• [dotnet] [bidi] Simplify namespace for communications by @nvborisenko in #16602
• [py] Improve type hints with union syntax and native types by @cgoldberg in #16590
• [py] Use double quotes in generate.py by @Delta456 in #16607
• [ci] Use pagination in mirror workflow to get all Selenium releases by @bonigarcia in #16605
• [dotnet] Generate atoms statically by @nvborisenko in #16608
• [nodejs] Update dev dependencies to fix vulnerabilities by @cgoldberg in #16610
• [java][BiDi] emulation: allow passing null to GeolocationOverride by @Delta456 in #16594
• [grid] Update container label compose.oneoff in Dynamic Grid by @VietND96 in #16613
• [grid] Dynamic Grid group dynamic containers in compose stack by @VietND96 in #16620
• [py] Use daemon threads for WebSocket connections by @cgoldberg in #16298
• [dotnet] Add syntax highlighting for JavaScript string methods by @RenderMichael in #16616
• [dotnet] Unwrap element wrapper recursively by @RenderMichael in #15362
• [dotnet] Simplify nuget package reference in Bazel by @RenderMichael in #16630
• [ci]: cancel previous CI run in case of new commit/push by @navin772 in #16624
• [ci]: remove concurrency checks in child workflows by @navin772 in #16633
• [dotnet] [bidi] Fix events subscription possibilities by @nvborisenko in #16603
• [dotnet] Pack net462 target framework by @nvborisenko in #16564
• [py][bidi] Allow resetting viewport by @cgoldberg in #16623
• [py] Use f-string in generate.py by @cgoldberg in #16641
• [java][BiDi] implement emulation.setScriptingEnabled by @Delta456 in #16631
• [dotnet] Remove Newtonsoft.Json test-only dependency by @RenderMichael in #16639
• [dotnet] Update paket build tool to 9.0.2 by @RenderMichael in #16637
• [dotnet] Update lock dependencies in bazel world by @nvborisenko in #16642
• [dotnet] [bidi] Possibility to reset viewport by @nvborisenko in #16601
• [java] Avoid logging debug logs with INFO level (either in RUN or DEBUG mode) by @asolntsev in #16584
• [java] Add JSpecify nullable annotations to exception classes by @iampopovich in #16026
• annotate with @NullMarked the whole package org.openqa.selenium.net by @asolntsev in #16494
• [java][bidi]: add BiDi method BrowsingContext.setViewport(null, null) to reset the mobile emulation mode by @asolntsev in #16524
• [java] Replace Maven dependency references with artifact() for org.jspecify.jspecify by @iampopovich in #16635
• 16612 download large files by @asolntsev in #16627
• #16573 unwrap double-wrapped webdriver by @asolntsev in #16575
• [dotnet] Implement third-party Permissions module by @RenderMichael in #16414
• [dotnet] [bidi] JsonSerializerContext instance per module by @nvborisenko in #16649
• [dotnet] [bidi] Immediately start to listen to incoming remote messages by @nvborisenko in #16651
• [dotnet] [bidi] Dedicated json context for all modules by @nvborisenko in #16652
• [dotnet] Move internal compiler services to Properties by @nvborisenko in #16653
• [dotnet] [bidi] Rent buffer for receiving bytes in WebSocket by @nvborisenko in #16650
• [dotnet] Migrate solution file to new .slnx format by @RenderMichael in #16638
• [dotnet] [bidi] Ignore non-serializable extension properties in BrowsingContext by @nvborisenko in #16654
• [dotnet] [bidi] Cache modules in the root BiDi by @...