diff --git a/lib/tasks/ci.rake b/lib/tasks/ci.rake
index 1db342f..60651f4 100644
--- a/lib/tasks/ci.rake
+++ b/lib/tasks/ci.rake
@@ -57,7 +57,7 @@ namespace :ci do
 
     sh 'ruby', '-Itest', *tests unless tests.empty?
     sh 'cucumber', *features unless features.empty?
-    sh 'xvfb-run', 'cucumber', '-p', 'selenium', *features unless features.empty?
+    sh 'xvfb-run', '-a', 'cucumber', '-p', 'selenium', *features unless features.empty?
 
     changed_plugins.each do |plugin|
       if $broken_plugins.include?(plugin)
diff --git a/lib/tasks/plugins_tests.rake b/lib/tasks/plugins_tests.rake
index 976ec23..e9900a3 100644
--- a/lib/tasks/plugins_tests.rake
+++ b/lib/tasks/plugins_tests.rake
@@ -116,7 +116,7 @@ def run_minitest files
 end
 
 def run_cucumber(profile, files)
-  sh 'xvfb-run', 'ruby', '-S', 'cucumber', '--profile', profile.to_s, '--format', ENV['CUCUMBER_FORMAT'] || 'progress' , *files
+  sh 'xvfb-run', '-a', 'ruby', '-S', 'cucumber', '--profile', profile.to_s, '--format', ENV['CUCUMBER_FORMAT'] || 'progress' , *files
 end
 
 def custom_run(name, files, run=:all)
--
libgit2 0.21.2