diff --git a/ChangeLog b/ChangeLog
index e611dbc8c4..4d43eb041e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-11-03  Chris Leonard  <cjl@sugarlabs.org>
+
+	* locale/iso-639.def: Add Quechua, Southern (quz) and Silesian (szl)
+	to iso-639.def.
+
 2013-11-03  Ondřej Bílka  <neleai@seznam.cz>
 
 	* elf/rtld.c: Remove unused NONTLS_INIT_TP.
diff --git a/locale/iso-639.def b/locale/iso-639.def
index 91485eba63..374242f603 100644
--- a/locale/iso-639.def
+++ b/locale/iso-639.def
@@ -386,6 +386,7 @@ DEFINE_LANGUAGE_CODE3 ("Provençal, Old (to 1500)", pro, pro)
 DEFINE_LANGUAGE_CODE3 ("Pu-Xian Chinese", cpx, cpx)
 DEFINE_LANGUAGE_CODE ("Pushto", ps, pus, pus)
 DEFINE_LANGUAGE_CODE ("Quechua", qu, que, que)
+DEFINE_LANGUAGE_CODE3 ("Quechua, Southern", quz, quz)
 DEFINE_LANGUAGE_CODE ("Raeto-Romance", rm, roh, roh)
 DEFINE_LANGUAGE_CODE3 ("Rajasthani", raj, raj)
 DEFINE_LANGUAGE_CODE3 ("Rapanui", rap, rap)
@@ -418,6 +419,7 @@ DEFINE_LANGUAGE_CODE3 ("Sicilian", scn, scn)
 DEFINE_LANGUAGE_CODE3 ("Sidamo", sid, sid)
 DEFINE_LANGUAGE_CODE3 ("Sign Languages", sgn, sgn)
 DEFINE_LANGUAGE_CODE3 ("Siksika", bla, bla)
+DEFINE_LANGUAGE_CODE3 ("Silesian", szl, szl)
 DEFINE_LANGUAGE_CODE ("Sindhi", sd, snd, snd)
 DEFINE_LANGUAGE_CODE ("Sinhala; Sinhalese", si, sin, sin)
 DEFINE_LANGUAGE_CODE3 ("Sino-Tibetan (Other)", sit, sit)