diff --git a/bin/sidekiqctl b/bin/sidekiqctl
index e9854680..ad7dfee5 100755
--- a/bin/sidekiqctl
+++ b/bin/sidekiqctl
@@ -64,7 +64,7 @@ class Sidekiqctl
   end
 
   def quiet
-    `kill -USR1 #{pid}`
+    `kill -TSTP #{pid}`
   end
 
   def stop
diff --git a/bin/sidekiqload b/bin/sidekiqload
index 25c71188..e874d892 100755
--- a/bin/sidekiqload
+++ b/bin/sidekiqload
@@ -46,7 +46,7 @@ Toxiproxy.populate([{
 }])
 
 self_read, self_write = IO.pipe
-%w(INT TERM USR1 USR2 TTIN).each do |sig|
+%w(INT TERM TSTP TTIN).each do |sig|
   begin
     trap sig do
       self_write.puts(sig)
@@ -67,14 +67,9 @@ def handle_signal(launcher, sig)
   when 'TERM'
     # Heroku sends TERM and then waits 10 seconds for process to exit.
     raise Interrupt
-  when 'USR1'
-    Sidekiq.logger.info "Received USR1, no longer accepting new work"
+  when 'TSTP'
+    Sidekiq.logger.info "Received TSTP, no longer accepting new work"
     launcher.quiet
-  when 'USR2'
-    if Sidekiq.options[:logfile]
-      Sidekiq.logger.info "Received USR2, reopening log file"
-      Sidekiq::Logging.reopen_logs
-    end
   when 'TTIN'
     Thread.list.each do |thread|
       Sidekiq.logger.warn "Thread TID-#{thread.object_id.to_s(36)} #{thread['label']}"
diff --git a/examples/upstart/sidekiq.conf b/examples/upstart/sidekiq.conf
index 0bcdaa9f..cb1d7149 100644
--- a/examples/upstart/sidekiq.conf
+++ b/examples/upstart/sidekiq.conf
@@ -40,7 +40,7 @@ normal exit 0 TERM
 
 # Older versions of Upstart might not support the reload command and need
 # this commented out.
-reload signal USR1
+reload signal TSTP
 
 # Upstart waits 5 seconds by default to kill the a process. Increase timeout to
 # give sidekiq process enough time to exit.
diff --git a/test/helper.rb b/test/helper.rb
index 5c92b0f4..7da4c862 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -12,12 +12,12 @@ if ENV["COVERAGE"]
 end
 ENV['RACK_ENV'] = ENV['RAILS_ENV'] = 'test'
 
-trap 'USR1' do
+trap 'TSTP' do
   threads = Thread.list
 
   puts
   puts "=" * 80
-  puts "Received USR1 signal; printing all #{threads.count} thread backtraces."
+  puts "Received TSTP signal; printing all #{threads.count} thread backtraces."
 
   threads.each do |thr|
     description = thr == Thread.main ? "Main thread" : thr.inspect
diff --git a/test/test_cli.rb b/test/test_cli.rb
index 2939e57d..3a55762a 100644
--- a/test/test_cli.rb
+++ b/test/test_cli.rb
@@ -335,7 +335,7 @@ class TestCli < Sidekiq::Test
       end
     end
 
-    describe 'handles USR1 and USR2' do
+    describe 'handles TSTP and USR2' do
       before do
         @tmp_log_path = '/tmp/sidekiq.log'
         @cli.parse(['sidekiq', '-L', @tmp_log_path, '-r', './test/fake_env.rb'])