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Run Selenium tests more easily with automatic installation and updates for all supported webdrivers.


webdrivers downloads drivers and directs Selenium to use them. Currently supports:

Support for msedgedriver will be added once the next Microsoft Edge version (v75) is released. More information is available here.


In your Gemfile:

gem 'webdrivers', '~> 4.0'

In your project:

require 'webdrivers'

The drivers will now be automatically downloaded or updated when you launch a browser through Selenium.

Specific Drivers

If you want webdrivers to only manage specific drivers you can specify one or more as follows:

require 'webdrivers/chromedriver'
require 'webdrivers/geckodriver'
require 'webdrivers/iedriver'

Download Location

The default download location is ~/.webdrivers directory, and this is configurable:

 Webdrivers.install_dir = '/webdrivers/install/dir'

Alternatively, you can define the path via the WD_INSTALL_DIR environment variable.

Version Pinning

If you would like to use a specific (older or beta) version, you can specify it for each driver. Otherwise, the latest (stable) driver will be downloaded and passed to Selenium.

# Chrome
Webdrivers::Chromedriver.required_version = '2.46'

# Firefox
Webdrivers::Geckodriver.required_version  = '0.23.0'

# Internet Explorer
Webdrivers::IEdriver.required_version     = '3.14.0'

You can explicitly trigger the update in your code, but this will happen automatically when the driver is initialized:


Caching Drivers

You can set Webdrivers to only look for updates if the previous check was longer ago than a specified number of seconds.

Webdrivers.cache_time = 86_400

Alternatively, you can define this value via the WD_CACHE_TIME environment variable.

The default is set to 24 hours (86,400 seconds).


If there is a proxy between you and the Internet then you will need to configure the gem to use the proxy. You can do this by calling the configure method.

Webdrivers.configure do |config|
  config.proxy_addr = 'myproxy_address.com'
  config.proxy_port = '8080'
  config.proxy_user = 'username'
  config.proxy_pass = 'password'

SSL_connect errors

If you are getting an error like this (especially common on Windows):

SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed

Add the following to your Gemfile:

gem "net_http_ssl_fix"

Add the following to your code:

require 'net_http_ssl_fix'

Other solutions are documented on the RubyGems website.

Rake tasks

Each driver has its own set of rake tasks (with Railtie support) that you can call once before executing the tests. These are especially useful if you're running tests in parallel and want to avoid performing an update check per thread.

$ bundle exec rake -T
rake webdrivers:chromedriver:remove           # Force remove chromedriver
rake webdrivers:chromedriver:update[version]  # Remove and download updated chromedriver if necessary
rake webdrivers:chromedriver:version          # Print current chromedriver version
rake webdrivers:geckodriver:remove            # Force remove geckodriver
rake webdrivers:geckodriver:update[version]   # Remove and download updated geckodriver if necessary
rake webdrivers:geckodriver:version           # Print current geckodriver version
rake webdrivers:iedriver:remove               # Force remove IEDriverServer
rake webdrivers:iedriver:update[version]      # Remove and download updated IEDriverServer if necessary
rake webdrivers:iedriver:version              # Print current IEDriverServer version

These tasks respect the WD_INSTALL_DIR and WD_CACHE_TIME environment variables which can also be passed through the rake command:

$ bundle exec rake webdrivers:chromedriver:update[2.46] webdrivers:geckodriver:update[0.24.0] WD_CACHE_TIME=86_400 WD_INSTALL_DIR='my_dir'
2019-05-20 19:03:01 INFO Webdrivers Updated to chromedriver 2.46.628388
2019-05-20 19:03:04 INFO Webdrivers Updated to geckodriver 0.24.0

Please note that these tasks do not use any of the configurations from your project (code) and only respect the ENV variables and the version (optional) passed to the rake tasks.


The logging level can be configured for debugging purpose:

Webdrivers.logger.level = :DEBUG

Browser Specific Notes


The version of chromedriver will depend on the version of Chrome you are using it with:

  • For versions >= 70, the downloaded version of chromedriver will match the installed version of Google Chrome. More information here.
  • For versions <= 69, chromedriver version 2.41 will be downloaded.
  • For beta versions, you'll have to require the beta version of chromedriver using Webdrivers::Chromedriver.required_version.

The gem looks for the Chrome/Chromium version that chromedriver will use by default. You can override this behavior by providing a path to the browser binary you want to use:

Selenium::WebDriver::Chrome.path = '/chromium/install/path/to/binary'

This is also required if Google Chrome is not installed in its default location.

Heroku/CircleCI Users

Follow the specific instructions here if your CI environment provides custom shims for Chrome or Chromium.

Microsoft Edge

Microsoft Edge support for v18 and older has been removed for now, as it is currently unreliable. To use Microsoft Edge, please visit the Downloads and Installation page.

Support for msedgedriver will be added once the next Microsoft Edge version (v75) is released. More information is available here.


Please see the wiki for solutions to commonly reported issues.

Join us in the #webdrivers-gem channel on Slack if you have any questions.


The gem is available as open source under the terms of the MIT License, see LICENSE.txt for full details and copyright.


Bug reports and pull requests are welcome on GitHub. Run bundle exec rake and squash the commits in your PRs.