diff --git a/doc/source/discussion/components.rst b/doc/source/discussion/components.rst
index 44c5bddf98..bde69e60e2 100644
--- a/doc/source/discussion/components.rst
+++ b/doc/source/discussion/components.rst
@@ -395,8 +395,7 @@ not read from a git repository. Zuul supports two kinds of reconfigurations.
 The full reconfiguration refetches and reloads the configuration of
 all tenants. To do so, run ``zuul-scheduler full-reconfigure``. For
 example this can be used to fix eventual configuration inconsistencies
-after connection problems to Gerrit/Github. The signal based method by
-sending a `SIGHUP` signal to the scheduler PID is deprecated.
+after connection problems to Gerrit/Github.
 
 The smart reconfiguration reloads only the tenants that changed their
 configuration in the tenant config file. To do so, run
diff --git a/releasenotes/notes/sighup-removed-a97df8640862c9c7.yaml b/releasenotes/notes/sighup-removed-a97df8640862c9c7.yaml
new file mode 100644
index 0000000000..a9ce158c51
--- /dev/null
+++ b/releasenotes/notes/sighup-removed-a97df8640862c9c7.yaml
@@ -0,0 +1,6 @@
+---
+upgrade:
+  - |
+    Signal based triggering of full-reconfiguration in the scheduler
+    (deprecated since 3.3.0) has been removed.  Use ``zuul-scheduler
+    full-reconfigure`` instead.
diff --git a/zuul/cmd/scheduler.py b/zuul/cmd/scheduler.py
index cbda4fbd89..e9593e5610 100755
--- a/zuul/cmd/scheduler.py
+++ b/zuul/cmd/scheduler.py
@@ -66,11 +66,6 @@ class Scheduler(zuul.cmd.ZuulDaemonApp):
         except Exception:
             self.log.exception("Reconfiguration failed:")
 
-    def reconfigure_handler(self, signum, frame):
-        signal.signal(signal.SIGHUP, signal.SIG_IGN)
-        self.fullReconfigure()
-        signal.signal(signal.SIGHUP, self.reconfigure_handler)
-
     def exit_handler(self, signum, frame):
         self.sched.exit()
         self.sched.join()
@@ -178,8 +173,6 @@ class Scheduler(zuul.cmd.ZuulDaemonApp):
             self.sched.stop()
             sys.exit(1)
 
-        signal.signal(signal.SIGHUP, self.reconfigure_handler)
-
         if self.args.nodaemon:
             signal.signal(signal.SIGTERM, self.exit_handler)
             while True: