diff --git a/lib/time/update.bash b/lib/time/update.bash
index e0eb891e3d..f24ef8204b 100755
--- a/lib/time/update.bash
+++ b/lib/time/update.bash
@@ -6,9 +6,11 @@
 # This script rebuilds the time zone files using files
 # downloaded from the ICANN/IANA distribution.
 
+# NOTE: As of Oct, 2013, the C files will not build on Macs but will build on Linux.
+
 # Versions to use.
-CODE=2013c
-DATA=2013c
+CODE=2013g
+DATA=2013g
 
 set -e
 rm -rf work
diff --git a/lib/time/zoneinfo.zip b/lib/time/zoneinfo.zip
index e9ddfff818..c9181153fa 100644
Binary files a/lib/time/zoneinfo.zip and b/lib/time/zoneinfo.zip differ