diff --git a/Gemfile.edge b/Gemfile.edge
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+source 'https://rubygems.org'
+
+gemspec
+
+gem 'sqlite3'
+gem 'coveralls', :require => false
+gem 'simplecov', :require => false
+
+# Use Rails master
+gem 'rails', github: 'rails/rails'
+
+# Current dependencies of edge rails
+gem 'arel', github: 'rails/arel'