diff --git a/libc/tools/zoneinfo/update-tzdata.py b/libc/tools/zoneinfo/update-tzdata.py
index f06dac3..8956136 100755
--- a/libc/tools/zoneinfo/update-tzdata.py
+++ b/libc/tools/zoneinfo/update-tzdata.py
@@ -6,7 +6,6 @@
 import httplib
 import os
 import re
-import socket
 import subprocess
 import sys
 import tarfile
@@ -33,14 +32,6 @@
            'etcetera', 'europe', 'northamerica', 'southamerica']
 
 
-def DisableIpv6():
-  """Replaces socket.getaddrinfo with a version that only requests IPv4 addresses."""
-  __real_getaddrinfo = socket.getaddrinfo
-  def __ipv4_getaddrinfo(host, port, family=0, socktype=0, proto=0, flags=0):
-    return __real_getaddrinfo(host, port, socket.AF_INET, socktype, proto, flags)
-  socket.getaddrinfo = __ipv4_getaddrinfo
-
-
 def GetCurrentTzDataVersion():
   return open('%s/tzdata' % bionic_libc_zoneinfo_dir).read().split('\x00', 1)[0]
 
@@ -159,7 +150,6 @@
   # The FTP server lets you download intermediate releases, and also lets you
   # download the signatures for verification, so it's your best choice.
   use_ftp = True
-  DisableIpv6() # I've been unable to talk to the FTP server over IPv6 (2013-04).
 
   if use_ftp:
     ftp = ftplib.FTP('ftp.iana.org')