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The latest Selenium release identified in the project’s official GitHub release feed is Selenium 4.50.0, released September 30, 2026. Its notes highlight a .NET WebDriver BiDi screenshot update that adds image size; the Ruby changelog also lists support for CDP v152, v153, and v154, BiDi methods for installing and uninstalling browser extensions, and removal of deprecated Firefox profile extension and certificate methods. These changes are binding-specific, so check the release notes for your language before upgrading. Selenium’s GitHub release feed is the best source for the latest version: the homepage news section showed 4.49 in the results available for this roundup.
What changed in Selenium 4.50.0?
The release notes describe changes in particular Selenium components rather than a single identical feature set across all language bindings.
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- .NET: The GitHub release notes highlight a WebDriver BiDi screenshot change that adds image size to captured screenshots.
- Ruby: The 4.50.0 changelog lists support for CDP versions v152, v153, and v154; WebDriver BiDi driver methods to install and uninstall browser extensions; and removal of deprecated Firefox profile extension and certificate methods.
For any capability you plan to use, consult the release notes and changelog for your binding. A feature documented for Ruby or .NET should not be assumed to work the same way in Java, Python, JavaScript, or another binding.
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Recent Selenium releases
The recent releases show continued work on WebDriver BiDi and related browser automation components. The dates and details below are from the project’s release feed and component changelogs.
#1 Best Overall
| Version | Release date | Notable documented changes |
|---|---|---|
| Selenium 4.50.0 | September 30, 2026 | .NET BiDi screenshot capture exposes image size; Ruby changelog lists CDP v152–v154 support, BiDi extension install/uninstall methods, and removal of deprecated Firefox profile extension and certificate methods. |
| Selenium 4.49.0 | September 9, 2026 | Project changelog records CDP v151–v153 support and continued BiDi schema work. It also lists a prebuilt Selenium Manager Linux ARM64 binary in all bindings. |
| Selenium 4.48.0 | August 27, 2026 | Project changelogs list low-level BiDi protocol integration work, WebSocket frame hang fixes, and stricter handling of malformed BiDi values. |
| Selenium 4.47.0 | August 10, 2026 | The Ruby changelog lists WebDriver BiDi support on Safari Preview. This is a Ruby-specific note, not a claim about every binding or Safari configuration. |
These entries summarize documented changes, not a compatibility test. Check the official release feed and the changelog for your binding for details before depending on a particular feature.
Why WebDriver BiDi keeps appearing in the updates
Selenium supports browser automation through language bindings and protocols. WebDriver BiDi is a continuing focus in recent release notes, including protocol integration work and binding-level capabilities. Selenium’s release index also identifies the removal of Chrome DevTools support for Firefox and describes WebDriver BiDi as the forward path for that area. That index entry is project direction, not a new change attributed to the 4.50.0 release.
Rank #2
CDP and WebDriver BiDi are distinct protocols; support for a CDP version in one binding does not establish equivalent BiDi support, or universal support across browsers and language bindings. When upgrading, match the protocol and capability to the exact browser and binding combination you use.
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Selenium is a suite of tools, not just one browser driver. The project describes its purpose as “Selenium automates browsers. That’s it!”
- WebDriver: Drives browsers for automated testing.
- Selenium IDE: Provides simple record-and-playback functionality.
- Selenium Grid: Distributes test execution across machines and browser/operating-system combinations.
Grid has a distinct update stream alongside language-binding releases. The official blog index dates posts about Selenium Grid 4.41.0 to February 22, 2026, Selenium 4.41 to February 20, and Selenium 4.40 to January 18. Those blog dates provide project context; they do not replace the GitHub feed as the place to check the newest release.
The project blog index also lists “Ending Support for Python 3.9” on October 8, 2025. Consult the article itself for the affected Selenium version and migration details rather than inferring them from its title.
How to keep a Selenium installation current
- Identify your binding and components. Note the language package and whether your setup also uses Selenium Manager, Grid, IDE, or protocol-specific features.
- Check the official release feed. Find the release date and notes at Selenium’s GitHub releases; do not rely on a homepage news list alone to establish the latest version.
- Read your binding’s changelog. Verify that a feature or removal applies to your language binding, and check any browser or protocol requirements stated there.
- Review deprecations before updating. In 4.50.0, the Ruby changelog lists removal of deprecated Firefox profile extension and certificate methods. If your code uses them, find the binding’s documented replacement or migration guidance before upgrading.
- Update and validate in your own test setup. Run your relevant browser and Grid tests, especially those that depend on BiDi, CDP, screenshots, or browser-specific behavior. Release notes are not a substitute for checking your application’s compatibility.
Capture a browser screenshot without adding Selenium setup
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