diff --git a/THANKS b/THANKS
index 8491b537..f23b74ed 100644
--- a/THANKS
+++ b/THANKS
@@ -20,6 +20,7 @@ Andreas Stührk <andy-python@hammerhartes.de>
 Andrew Burdo <zeezooz@gmail.com>
 Andrew Svetlov <andrew.svetlov@gmail.com>
 Anil V <avaitla16@gmail.com>
+Antoine Girard <antoine.girard.dev@gmail.com>
 Anton Vlasenko <antares.spica@gmail.com>
 Bartosz Oler <bartosz@bzimage.us>
 Ben Cochran <bcochran@gmail.com>
diff --git a/gunicorn/workers/ggevent.py b/gunicorn/workers/ggevent.py
index 56f21ddf..34ee72a8 100644
--- a/gunicorn/workers/ggevent.py
+++ b/gunicorn/workers/ggevent.py
@@ -168,6 +168,11 @@ class GeventWorker(AsyncWorker):
         # blocking calls. See #1126
         gevent.spawn(super(GeventWorker, self).handle_quit, sig, frame)
 
+    def handle_usr1(self, sig, frame):
+        # Make the gevent workers handle the usr1 signal
+        # by deferring to a new greenlet. See #1645
+        gevent.spawn(super(GeventWorker, self).handle_usr1, sig, frame)
+
     if gevent.version_info[0] == 0:
 
         def init_process(self):