diff --git a/ext/date/lib/timezonedb.h b/ext/date/lib/timezonedb.h
index 40839009ca0..5ba53c18b60 100644
--- a/ext/date/lib/timezonedb.h
+++ b/ext/date/lib/timezonedb.h
@@ -7637,7 +7637,7 @@ const unsigned char timelib_timezone_db_data_builtin[257923] = {
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 
 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1B, 0xCA, 0xDB, 0x86, 0xB0, 
 0xCC, 0x05, 0x71, 0x18, 0xCC, 0x95, 0x32, 0xA8, 0xDD, 0xA8, 0xD2, 0x98, 0x02, 0x4F, 0x9D, 0x20, 
-0x4A, 0x3B, 0xD2, 0x20, 0x01, 0x02, 0x01, 0x03, 0x04, 0x05, 0x00, 0x00, 0x52, 0xD0, 0x00, 0x00, 
+0x4A, 0x3B, 0xC4, 0x10, 0x01, 0x02, 0x01, 0x03, 0x04, 0x05, 0x00, 0x00, 0x52, 0xD0, 0x00, 0x00, 
 0x00, 0x00, 0x5B, 0x68, 0x00, 0x04, 0x00, 0x00, 0x4D, 0x58, 0x00, 0x09, 0x00, 0x00, 0x54, 0x60, 
 0x00, 0x0D, 0x00, 0x00, 0x54, 0x60, 0x00, 0x12, 0x00, 0x00, 0x62, 0x70, 0x01, 0x16, 0x48, 0x4D, 
 0x54, 0x00, 0x42, 0x55, 0x52, 0x54, 0x00, 0x49, 0x53, 0x54, 0x00, 0x44, 0x41, 0x43, 0x54, 0x00, 
@@ -7706,7 +7706,7 @@ const unsigned char timelib_timezone_db_data_builtin[257923] = {
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 
 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1B, 0xCA, 0xDB, 0x86, 0xB0, 
 0xCC, 0x05, 0x71, 0x18, 0xCC, 0x95, 0x32, 0xA8, 0xDD, 0xA8, 0xD2, 0x98, 0x02, 0x4F, 0x9D, 0x20, 
-0x4A, 0x3B, 0xD2, 0x20, 0x01, 0x02, 0x01, 0x03, 0x04, 0x05, 0x00, 0x00, 0x52, 0xD0, 0x00, 0x00, 
+0x4A, 0x3B, 0xC4, 0x10, 0x01, 0x02, 0x01, 0x03, 0x04, 0x05, 0x00, 0x00, 0x52, 0xD0, 0x00, 0x00, 
 0x00, 0x00, 0x5B, 0x68, 0x00, 0x04, 0x00, 0x00, 0x4D, 0x58, 0x00, 0x09, 0x00, 0x00, 0x54, 0x60, 
 0x00, 0x0D, 0x00, 0x00, 0x54, 0x60, 0x00, 0x12, 0x00, 0x00, 0x62, 0x70, 0x01, 0x16, 0x48, 0x4D, 
 0x54, 0x00, 0x42, 0x55, 0x52, 0x54, 0x00, 0x49, 0x53, 0x54, 0x00, 0x44, 0x41, 0x43, 0x54, 0x00, 
@@ -18113,4 +18113,4 @@ const unsigned char timelib_timezone_db_data_builtin[257923] = {
 0x00, 0x00, 0x55, 0x54, 0x43, 0x00, 0x00, 0x00, 0x00, 0x89, 0x54, 0x40, 0x01, 0x12, 0xA8, 0x80, 
 0x00, 0x00, 0x00, 0x00, };
 
-const timelib_tzdb timezonedb_builtin = { "2009.9", 560, timezonedb_idx_builtin, timelib_timezone_db_data_builtin };
+const timelib_tzdb timezonedb_builtin = { "2009.10", 560, timezonedb_idx_builtin, timelib_timezone_db_data_builtin };