diff --git a/Changes.md b/Changes.md
index 578cb74c..292f56f1 100644
--- a/Changes.md
+++ b/Changes.md
@@ -1,7 +1,8 @@
 1.2.1
 -----------
 
-- Overhaul retries Web UI with new index page and bulk operations #184
+- Print backtraces for all threads upon INFO signal [#183]
+- Overhaul retries Web UI with new index page and bulk operations [#184]
 
 1.2.0
 -----------
diff --git a/lib/sidekiq/cli.rb b/lib/sidekiq/cli.rb
index 85143e12..b0cc13c4 100644
--- a/lib/sidekiq/cli.rb
+++ b/lib/sidekiq/cli.rb
@@ -15,6 +15,13 @@ trap 'USR1' do
   mgr.stop! if mgr
 end
 
+trap 'INFO' do
+  Thread.list.each do |thread|
+    puts "Thread TID-#{thread.object_id.to_s(36)} #{thread['label']}"
+    puts thread.backtrace.join("\n")
+  end
+end
+
 require 'yaml'
 require 'singleton'
 require 'optparse'