diff --git a/gunicorn/worker.py b/gunicorn/worker.py
index 4c0b10d7..d5fe0116 100644
--- a/gunicorn/worker.py
+++ b/gunicorn/worker.py
@@ -22,7 +22,7 @@ class Worker(object):
 
     SIGNALS = map(
         lambda x: getattr(signal, "SIG%s" % x),
-        "QUIT INT TERM USR1".split()
+        "HUP QUIT INT TERM USR1 USR2 WINCH CHLD".split()
     )
     
     PIPE = []