diff --git a/lib/timeout.rb b/lib/timeout.rb
index 95dd1490ae..2aad1d7465 100644
--- a/lib/timeout.rb
+++ b/lib/timeout.rb
@@ -120,6 +120,7 @@ module Timeout
         requests.reject!(&:done?)
       end
     end
+    watcher.name = "Timeout stdlib thread"
     watcher.thread_variable_set(:"\0__detached_thread__", true)
     watcher
   end