diff --git a/lib/airbrake-ruby.rb b/lib/airbrake-ruby.rb
index <HASH>..<HASH> 100644
--- a/lib/airbrake-ruby.rb
+++ b/lib/airbrake-ruby.rb
@@ -1,7 +1,6 @@
 require 'net/https'
 require 'logger'
 require 'json'
-require 'thread'
 require 'set'
 require 'socket'
 require 'time'
airbrake-ruby: fix the Lint/RedundantRequireStatement cop offence