selenium-ci · Oct 9, 2026 · Oct 9, 2026 · Oct 9, 2026 · Oct 9, 2026 · Oct 9, 2026
diff --git a/.github/ISSUE_TEMPLATE/bug-report.yml b/.github/ISSUE_TEMPLATE/bug-report.yml
@@ -50,7 +50,7 @@ body:
     id: selenium-version
     attributes:
       label: What version of Selenium are you currently using?
-      description: Important! The latest released version of Selenium is 4.50 and we can't fix old versions.
+      description: Important! The latest released version of Selenium is 4.51 and we can't fix old versions.
       placeholder: e.g., 4.17.0
     validations:
       required: true

diff --git a/AUTHORS b/AUTHORS
@@ -189,6 +189,7 @@ Corey Schooler <cschooler@cerner.com>
 Coty Rosenblath <coty@pobox.com>
 Craig Nishina <craig.nishina@gmail.com>
 CsolG <csolg7@gmail.com>
+cui fliter <imcusg@gmail.com>
 customcommander <hello@spinjs.com>
 Cédric Boutillier <cedric.boutillier@gmail.com>
 Dakkaron <dak1st@gmx.at>

diff --git a/common/selenium_manager.bzl b/common/selenium_manager.bzl
@@ -7,41 +7,41 @@ def selenium_manager():
     http_file(
         name = "download_sm_linux_x86_64",
         executable = True,
-        sha256 = "3081648cf6858e9aa0e71e06637a663e0b4fb0fc43149402539cfe0daaa9406f",
-        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-ae22658/selenium-manager-linux-x86_64",
+        sha256 = "ebb19cbd821362416d49685124bf1cf2ff60c3a0fc7e8ff8039b9ec213deee0a",
+        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-e78293d/selenium-manager-linux-x86_64",
     )
 
     http_file(
         name = "download_sm_linux_arm64",
         executable = True,
-        sha256 = "267a1558b579f0bd3b3a621fb5a6f621da1ed8c2174ab7ba9c8e5b0350278bd3",
-        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-ae22658/selenium-manager-linux-arm64",
+        sha256 = "d731461ff6e555e85e84ef44493a81bcdbd4c5a6fdb6557d29b76efb25c6ab32",
+        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-e78293d/selenium-manager-linux-arm64",
     )
 
     http_file(
         name = "download_sm_macos",
         executable = True,
-        sha256 = "432f01cc2493c9d7afdcc1d5d50fbe7273fb73ded7c53da03c1b35638da556ae",
-        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-ae22658/selenium-manager-macos",
+        sha256 = "9449b13ce26ef57af218e03d9f5489358caeba95065d579c0723b002d8a04082",
+        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-e78293d/selenium-manager-macos",
     )
 
     http_file(
         name = "download_sm_windows",
         executable = True,
-        sha256 = "11c43f8ca59d58066c139b77deb7ad6e9a2aba52423062035b70b23379215564",
-        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-ae22658/selenium-manager-windows.exe",
+        sha256 = "359c01425190d584893b46707a72069cfb8a6dcaa4461f60fcaaac266b611a32",
+        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-e78293d/selenium-manager-windows.exe",
     )
 
     http_file(
         name = "download_sm_sbom",
-        sha256 = "e7b0dd1ca6a2e95fd5ef62e684998b587f086173238a21fc817a0f92a01d2442",
-        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-ae22658/selenium-manager.cdx.json",
+        sha256 = "83b425ff410c907013a1262da5c1eedec3636086fcaa8ab5e60af652ae990310",
+        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-e78293d/selenium-manager.cdx.json",
     )
 
     http_file(
         name = "download_sm_notice",
-        sha256 = "79a755207513cc8cccac6bdee242ad04a485b5dade06d114e10bbace848d71a0",
-        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-ae22658/selenium-manager-THIRD-PARTY-NOTICES.txt",
+        sha256 = "c6da938b5e19a5ba8c7fc177784225ec0463f956efee95da5a1eaa2ebb7a9d9f",
+        url = "https://github.com/SeleniumHQ/selenium_manager_artifacts/releases/download/selenium-manager-e78293d/selenium-manager-THIRD-PARTY-NOTICES.txt",
     )
 
 def _selenium_manager_artifacts_impl(_ctx):

diff --git a/dotnet/CHANGELOG b/dotnet/CHANGELOG
@@ -1,3 +1,9 @@
+v4.51.0
+======
+* Support CDP versions: v153, v154, v155
+* [test] Separate project for NUnit infrastructure (#18104)
+* [build] Automated Browser Version Update (major) with CDP (#18131)
+
 v4.50.0
 ======
 * Support CDP versions: v152, v153, v154

diff --git a/java/CHANGELOG b/java/CHANGELOG
@@ -1,3 +1,17 @@
+v4.51.0
+======
+* Support CDP versions: v153, v154, v155
+* Do not leak the HttpClient on startup failure (#18047)
+* Add RemoteWebDriver.getClientFactory() and move HttpCommandExecutor field removal to 4.53 (#18111)
+* [bidi] Decode nested RemoteValues from the parsed tree instead of re-serializing each subtree (#18095)
+* remove guava from client bindings #12737 (#13739)
+* [bidi] Add BiDi code generator (#17777)
+* [bidi] Type field-less synthetic map records as Map<String, V> (#18122)
+* [build] source the Java and .NET versions from a root version.bzl that tests do not read (#18138)
+* Do not pass a bare --proxy to Selenium Manager (#18089)
+* [bidi] Update tests to use converter functions (#18146)
+* [build] Automated Browser Version Update (major) with CDP (#18131)
+
 v4.50.0
 ======
 * Support CDP versions: v152, v153, v154

diff --git a/javascript/atoms/BUILD.bazel b/javascript/atoms/BUILD.bazel
@@ -6,7 +6,7 @@ load("//javascript:defs.bzl", "closure_js_deps", "closure_test_suite")
 
 package(default_visibility = ["//visibility:public"])
 
-VERSION = "4.51.0-nightly202609302012"
+VERSION = "4.51.0"
 
 # These build tools are CommonJS; the .cjs extension keeps that true regardless
 # of the "type": "module" declared by the @selenium/atoms package.json above

diff --git a/javascript/atoms/package.json b/javascript/atoms/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@selenium/atoms",
-  "version": "4.51.0-nightly202609302012",
+  "version": "4.51.0",
   "description": "Browser injection atoms for Selenium WebDriver",
   "type": "module",
   "main": "./dist/index.js",

diff --git a/javascript/selenium-webdriver/BUILD.bazel b/javascript/selenium-webdriver/BUILD.bazel
@@ -115,7 +115,7 @@ generate_bidi_library(
     vendor_cddl_files = BIDI_VENDOR_CDDL_FILES,
 )
 
-VERSION = "4.51.0-nightly202609302012"
+VERSION = "4.51.0"
 
 BROWSER_VERSIONS = [
     "v155",

diff --git a/javascript/selenium-webdriver/CHANGES.md b/javascript/selenium-webdriver/CHANGES.md
@@ -1,3 +1,11 @@
+## 4.51.0
+
+- Support CDP versions: v153, v154, v155
+- [build] Automated Dependency Update (#18124)
+- [bidi] Add vendor specific class generation (#18125)
+- Add webextension methods on the driver with BiDi and fallback (#18127)
+- [build] Automated Browser Version Update (major) with CDP (#18131)
+
 ## 4.50.0
 
 - Support CDP versions: v152, v153, v154

diff --git a/javascript/selenium-webdriver/package.json b/javascript/selenium-webdriver/package.json
@@ -1,6 +1,6 @@
 {
   "name": "selenium-webdriver",
-  "version": "4.51.0-nightly202609302012",
+  "version": "4.51.0",
   "description": "The official WebDriver JavaScript bindings from the Selenium project",
   "license": "Apache-2.0",
   "keywords": [

diff --git a/py/BUILD.bazel b/py/BUILD.bazel
@@ -76,7 +76,7 @@ compile_pip_requirements(
     requirements_txt = ":requirements_lock.txt",
 )
 
-SE_VERSION = "4.51.0.202609302012"
+SE_VERSION = "4.51.0"
 
 BROWSER_VERSIONS = [
     "v155",

diff --git a/py/CHANGES b/py/CHANGES
@@ -1,3 +1,7 @@
+Selenium 4.51.0
+* Support CDP versions: v153, v154, v155
+* Validate WebSocket response interval correctly (#17984)
+
 Selenium 4.50.0
 * Support CDP versions: v152, v153, v154
 * cleanup for ruff b904 raise from  (#18030)

diff --git a/py/docs/source/conf.py b/py/docs/source/conf.py
@@ -77,7 +77,7 @@
 # The short X.Y version.
 version = "4.51"
 # The full version, including alpha/beta/rc tags.
-release = "4.51.0.202609302012"
+release = "4.51.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

diff --git a/py/pyproject.toml b/py/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "selenium"
-version = "4.51.0.202609302012"
+version = "4.51.0"
 license = "Apache-2.0"
 license-files = ["LICENSE", "NOTICE"]
 description = "Official Python bindings for Selenium WebDriver."

diff --git a/py/selenium/__init__.py b/py/selenium/__init__.py
@@ -16,4 +16,4 @@
 # under the License.
 
 
-__version__ = "4.51.0.202609302012"
+__version__ = "4.51.0"
diff --git a/py/selenium/webdriver/__init__.py b/py/selenium/webdriver/__init__.py
@@ -30,7 +30,7 @@
         "Selenium is forcing verbose logging which may override user-specified settings."
     )
 
-__version__ = "4.51.0.202609302012"
+__version__ = "4.51.0"
 
 # Lazy import mapping: name -> (module_path, attribute_name)
 _LAZY_IMPORTS = {

diff --git a/rb/CHANGES b/rb/CHANGES
@@ -1,3 +1,10 @@
+4.51.0 (2026-10-09)
+=========================
+* Support CDP versions: v153, v154, v155
+* [build] Automated CDDL Spec Update (#18118)
+* type a field-less synthetic map record as a validated map (#18121)
+* [build] Automated Browser Version Update (major) with CDP (#18131)
+
 4.50.0 (2026-09-30)
 =========================
 * Support CDP versions: v152, v153, v154

diff --git a/rb/Gemfile.lock b/rb/Gemfile.lock
@@ -3,7 +3,7 @@ PATH
   specs:
     selenium-devtools (0.155.0)
       selenium-webdriver (~> 4.2)
-    selenium-webdriver (4.51.0.nightly)
+    selenium-webdriver (4.51.0)
       base64 (~> 0.2)
       logger (~> 1.4)
       rubyzip (>= 1.2.2, < 4.0)

diff --git a/rb/lib/selenium/webdriver/version.rb b/rb/lib/selenium/webdriver/version.rb
@@ -19,6 +19,6 @@
 
 module Selenium
   module WebDriver
-    VERSION = '4.51.0.nightly'
+    VERSION = '4.51.0'
   end # WebDriver
 end # Selenium
diff --git a/rust/BUILD.bazel b/rust/BUILD.bazel
@@ -125,7 +125,7 @@ rust_binary(
     rustc_env = {
         "CARGO_PKG_DESCRIPTION": "Selenium Manager is a CLI tool that automatically manages the browser/driver resources required by Selenium.",
     },
-    version = "0.4.51-nightly",
+    version = "0.4.51",
     visibility = ["//visibility:public"],
     deps = [
         ":selenium_manager",

diff --git a/rust/CHANGELOG.md b/rust/CHANGELOG.md
@@ -1,3 +1,8 @@
+0.4.51
+======
+* Degrade to empty metadata when the cache cannot be read (#18101)
+* configure the Chrome sandbox after unpacking a Chrome for Testing build on Windows (#18139)
+
 0.4.50
 ======
 * Show a proper error message if we can't open metdata_path (#18087)

diff --git a/rust/Cargo.lock b/rust/Cargo.lock
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "selenium-manager"
-version = "0.4.51-nightly" # don't forget to update rust/BUILD.bazel
+version = "0.4.51" # don't forget to update rust/BUILD.bazel
 edition = "2024"
 authors = ["Selenium <selenium-developers@googlegroups.com"]
 license = "Apache-2.0"

diff --git a/version.bzl b/version.bzl
@@ -2,6 +2,6 @@
 # Edit with `./go <lang>:version <X.Y.Z|nightly>` or `./go all:version ...`.
 # Nothing under test reads this file, so a version bump leaves cached test results valid.
 VERSIONS = {
-    "dotnet": "4.51.0-nightly",
-    "java": "4.51.0-SNAPSHOT",
+    "dotnet": "4.51.0",
+    "java": "4.51.0",
 }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -16,4 +16,4 @@
		# under the License.


		__version__ = "4.51.0.202609302012"
		__version__ = "4.51.0"