diff --git a/library/net-ftp/fixtures/server.rb b/library/net-ftp/fixtures/server.rb
index ecbed591d5..8b34d3f8bd 100644
--- a/library/net-ftp/fixtures/server.rb
+++ b/library/net-ftp/fixtures/server.rb
@@ -9,7 +9,7 @@ class DummyFTP
     attr_reader :server_port
 
     def initialize
-      @hostname = "localhost"
+      @hostname = "127.0.0.1"
       @server = TCPServer.new(@hostname, 0)
       @server_port = @server.addr[1]