diff --git a/ext/socket/lib/socket.rb b/ext/socket/lib/socket.rb
index 9862c92c0b..dae1c16760 100644
--- a/ext/socket/lib/socket.rb
+++ b/ext/socket/lib/socket.rb
@@ -917,7 +917,8 @@ class Socket < BasicSocket
     end
   ensure
     hostname_resolution_threads.each do |thread|
-      thread.exit
+      thread.kill
+      thread.join
     end
 
     hostname_resolution_result&.close