diff --git a/lib/foreman/engine.rb b/lib/foreman/engine.rb
index 94ac725..a71871a 100644
--- a/lib/foreman/engine.rb
+++ b/lib/foreman/engine.rb
@@ -2,7 +2,6 @@ require "foreman"
 require "foreman/process"
 require "foreman/procfile"
 require "foreman/utils"
-require "pty"
 require "tempfile"
 require "timeout"
 require "term/ansicolor"