diff --git a/src/UnixPipes.php b/src/UnixPipes.php
index 2cf27e7..08cd590 100644
--- a/src/UnixPipes.php
+++ b/src/UnixPipes.php
@@ -100,5 +100,6 @@ protected function write($input)
         }
 
         fwrite($this->pipes[0], $input);
+        usleep(1000);
     }
 }