diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index deb496d..c5986b5 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -7,6 +7,7 @@
 %w[/lib /spec].each { |p| $LOAD_PATH.unshift(p) }
 
 require "fileutils"
+require "logger"
 require "shellwords"
 
 require "capybara/spec/spec_helper"
@@ -15,6 +16,8 @@
 require "support/test_app"
 require "support/external_browser"
 
+TestApp.use(Rack::CommonLogger, Logger.new("/tmp/cuprite/test_app.log")) if ENV["CI"]
+
 puts ""
 command = Ferrum::Browser::Command.build(Ferrum::Browser::Options.new, nil)
 puts `#{Shellwords.escape(command.path)} --version`