diff --git a/src/ForkManager.php b/src/ForkManager.php
index <HASH>..<HASH> 100644
--- a/src/ForkManager.php
+++ b/src/ForkManager.php
@@ -174,6 +174,7 @@ class ForkManager
             //Forked child, do your deeds....
             // $this->logger->debug("Doing something fun in pid ".getmypid().");
             $worker();
+            exit(0);
         }
     }
Fixed concurrency related bug where child processes where not exiting.