diff --git a/gemfiles/Gemfile.edge b/gemfiles/Gemfile.edge
index 2ec03da7..2dc2ae3d 100644
--- a/gemfiles/Gemfile.edge
+++ b/gemfiles/Gemfile.edge
@@ -4,4 +4,4 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in webdrivers.gemspec
 gemspec path: '..'
-gem 'selenium-webdriver', github: 'seleniumhq/selenium', glob: 'rb/*.gemspec'
+gem 'selenium-webdriver', github: 'seleniumhq/selenium', branch: 'trunk', glob: 'rb/*.gemspec'