diff --git a/lib/foreman/engine.rb b/lib/foreman/engine.rb
index 139a114..13f923d 100644
--- a/lib/foreman/engine.rb
+++ b/lib/foreman/engine.rb
@@ -273,7 +273,7 @@ private
     Thread.new do
       begin
         loop do
-          (IO.select(@readers.values).first || []).each do |reader|
+          (IO.select(@readers.values, nil, nil, 30).first || []).each do |reader|
             data = reader.gets
             output_with_mutex name_for(@readers.invert[reader]), data
           end