diff --git a/LanguageData/iso6392 b/LanguageData/iso6392
index 9d31266..7125470 100644
--- a/LanguageData/iso6392
+++ b/LanguageData/iso6392
@@ -162,7 +162,7 @@ gor|||Gorontalo|gorontalo
 got|||Gothic|gothique
 grb|||Grebo|grebo
 grc|||Greek, Ancient (to 1453)|grec ancien (jusqu'à 1453)
-gre|ell|el|Greek, Modern (1453-)|grec moderne (après 1453)
+gre|ell|el|Modern Greek (1453-)|grec moderne (1453-)
 grn||gn|Guarani|guarani
 gsw|||Swiss German; Alemannic; Alsatian|suisse alémanique; alémanique; alsacien
 guj||gu|Gujarati|goudjrati
@@ -301,17 +301,17 @@ nai|||North American Indian languages|nord-amérindiennes, langues
 nap|||Neapolitan|napolitain
 nau||na|Nauru|nauruan
 nav||nv|Navajo; Navaho|navaho
-nbl||nr|Ndebele, South; South Ndebele|ndébélé du Sud
-nde||nd|Ndebele, North; North Ndebele|ndébélé du Nord
+nbl||nr|South Ndebele|ndébélé du Sud
+nde||nd|North Ndebele|ndébélé du Nord
 ndo||ng|Ndonga|ndonga
 nds|||Low German; Low Saxon; German, Low; Saxon, Low|bas allemand; bas saxon; allemand, bas; saxon, bas
 nep||ne|Nepali|népalais
-new|||Nepal Bhasa; Newari|nepal bhasa; newari
+new|||Nepal Bhasa; Newar; Newari|nepal bhasa; néwar; newari
 nia|||Nias|nias
 nic|||Niger-Kordofanian languages|nigéro-kordofaniennes, langues
 niu|||Niuean|niué
-nno||nn|Norwegian Nynorsk; Nynorsk, Norwegian|norvégien nynorsk; nynorsk, norvégien
-nob||nb|Bokmål, Norwegian; Norwegian Bokmål|norvégien bokmål
+nno||nn|Norwegian Nynorsk|norvégien nynorsk
+nob||nb|Norwegian Bokmål|norvégien bokmål
 nog|||Nogai|nogaï; nogay
 non|||Norse, Old|norrois, vieux
 nor||no|Norwegian|norvégien
diff --git a/LanguageData/iso6392.json b/LanguageData/iso6392.json
index a3051b8..fb708d3 100644
--- a/LanguageData/iso6392.json
+++ b/LanguageData/iso6392.json
@@ -724,7 +724,7 @@
       "Part2B": "gre",
       "Part2T": "ell",
       "Part1": "el",
-      "RefName": "Greek, Modern (1453-)"
+      "RefName": "Modern Greek (1453-)"
     },
     {
       "Part2B": "grn",
@@ -1341,12 +1341,12 @@
     {
       "Part2B": "nbl",
       "Part1": "nr",
-      "RefName": "Ndebele, South; South Ndebele"
+      "RefName": "South Ndebele"
     },
     {
       "Part2B": "nde",
       "Part1": "nd",
-      "RefName": "Ndebele, North; North Ndebele"
+      "RefName": "North Ndebele"
     },
     {
       "Part2B": "ndo",
@@ -1364,7 +1364,7 @@
     },
     {
       "Part2B": "new",
-      "RefName": "Nepal Bhasa; Newari"
+      "RefName": "Nepal Bhasa; Newar; Newari"
     },
     {
       "Part2B": "nia",
@@ -1381,12 +1381,12 @@
     {
       "Part2B": "nno",
       "Part1": "nn",
-      "RefName": "Norwegian Nynorsk; Nynorsk, Norwegian"
+      "RefName": "Norwegian Nynorsk"
     },
     {
       "Part2B": "nob",
       "Part1": "nb",
-      "RefName": "Bokm\u00E5l, Norwegian; Norwegian Bokm\u00E5l"
+      "RefName": "Norwegian Bokm\u00E5l"
     },
     {
       "Part2B": "nog",
diff --git a/LanguageData/rfc5646 b/LanguageData/rfc5646
index 4baf631..82618f9 100644
--- a/LanguageData/rfc5646
+++ b/LanguageData/rfc5646
@@ -1,4 +1,4 @@
-File-Date: 2025-07-15
+File-Date: 2025-08-25
 %%
 Type: language
 Subtag: aa
@@ -3102,6 +3102,7 @@ Added: 2009-07-29
 Type: language
 Subtag: asb
 Description: Assiniboine
+Description: Nakoda Assiniboine
 Added: 2009-07-29
 %%
 Type: language
@@ -3269,6 +3270,7 @@ Added: 2009-07-29
 Type: language
 Subtag: atj
 Description: Atikamekw
+Description: Nehirowimowin
 Added: 2009-07-29
 %%
 Type: language
@@ -7981,6 +7983,7 @@ Added: 2009-07-29
 Type: language
 Subtag: clc
 Description: Chilcotin
+Description: Tsilhqot’in
 Added: 2009-07-29
 %%
 Type: language
@@ -8021,6 +8024,7 @@ Added: 2009-07-29
 %%
 Type: language
 Subtag: clm
+Description: Klallam
 Description: Clallam
 Added: 2009-07-29
 %%
@@ -13509,7 +13513,7 @@ Added: 2009-07-29
 %%
 Type: language
 Subtag: haa
-Description: Han
+Description: Hän
 Added: 2009-07-29
 %%
 Type: language
@@ -19022,6 +19026,7 @@ Added: 2009-07-29
 %%
 Type: language
 Subtag: kwk
+Description: Kwak'wala
 Description: Kwakiutl
 Added: 2009-07-29
 %%
@@ -22262,7 +22267,7 @@ Added: 2009-07-29
 %%
 Type: language
 Subtag: mhn
-Description: Mócheno
+Description: Mòcheno
 Added: 2009-07-29
 %%
 Type: language
@@ -31655,6 +31660,7 @@ Added: 2009-07-29
 Type: language
 Subtag: sec
 Description: Sechelt
+Description: She shashishalhem
 Added: 2009-07-29
 %%
 Type: language
@@ -32003,6 +32009,7 @@ Added: 2009-07-29
 Type: language
 Subtag: shs
 Description: Shuswap
+Description: Secwepemctsín
 Added: 2009-07-29
 %%
 Type: language
@@ -33014,6 +33021,7 @@ Added: 2009-07-29
 Type: language
 Subtag: squ
 Description: Squamish
+Description: Sḵwx̱wú7mesh sníchim
 Added: 2009-07-29
 %%
 Type: language
@@ -34664,6 +34672,8 @@ Added: 2009-07-29
 Type: language
 Subtag: thp
 Description: Thompson
+Description: Nłeʔkepmxcín
+Description: Thompson River Salish
 Added: 2009-07-29
 %%
 Type: language
@@ -34684,6 +34694,7 @@ Added: 2009-07-29
 Type: language
 Subtag: tht
 Description: Tahltan
+Description: Tāłtān
 Added: 2009-07-29
 %%
 Type: language
@@ -42419,7 +42430,7 @@ Added: 2009-07-29
 %%
 Type: language
 Subtag: zmp
-Description: Mpuono
+Description: Mbuun
 Added: 2009-07-29
 %%
 Type: language
diff --git a/LanguageData/rfc5646.json b/LanguageData/rfc5646.json
index 5c243b8..b64cee3 100644
--- a/LanguageData/rfc5646.json
+++ b/LanguageData/rfc5646.json
@@ -1,5 +1,5 @@
 {
-  "FileDate": "2025-07-15",
+  "FileDate": "2025-08-25",
   "RecordList": [
     {
       "Type": "Language",
@@ -5939,7 +5939,8 @@
       "Type": "Language",
       "SubTag": "asb",
       "Description": [
-        "Assiniboine"
+        "Assiniboine",
+        "Nakoda Assiniboine"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -6266,7 +6267,8 @@
       "Type": "Language",
       "SubTag": "atj",
       "Description": [
-        "Atikamekw"
+        "Atikamekw",
+        "Nehirowimowin"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -15565,7 +15567,8 @@
       "Type": "Language",
       "SubTag": "clc",
       "Description": [
-        "Chilcotin"
+        "Chilcotin",
+        "Tsilhqot\u2019in"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -15646,6 +15649,7 @@
       "Type": "Language",
       "SubTag": "clm",
       "Description": [
+        "Klallam",
         "Clallam"
       ],
       "Added": "2009-07-29",
@@ -26419,7 +26423,7 @@
       "Type": "Language",
       "SubTag": "haa",
       "Description": [
-        "Han"
+        "H\u00E4n"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -37275,6 +37279,7 @@
       "Type": "Language",
       "SubTag": "kwk",
       "Description": [
+        "Kwak\u0027wala",
         "Kwakiutl"
       ],
       "Added": "2009-07-29",
@@ -43666,7 +43671,7 @@
       "Type": "Language",
       "SubTag": "mhn",
       "Description": [
-        "M\u00F3cheno"
+        "M\u00F2cheno"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -62151,7 +62156,8 @@
       "Type": "Language",
       "SubTag": "sec",
       "Description": [
-        "Sechelt"
+        "Sechelt",
+        "She shashishalhem"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -62840,7 +62846,8 @@
       "Type": "Language",
       "SubTag": "shs",
       "Description": [
-        "Shuswap"
+        "Shuswap",
+        "Secwepemcts\u00EDn"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -64836,7 +64843,8 @@
       "Type": "Language",
       "SubTag": "squ",
       "Description": [
-        "Squamish"
+        "Squamish",
+        "S\u1E35wx\u0331w\u00FA7mesh sn\u00EDchim"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -68100,7 +68108,9 @@
       "Type": "Language",
       "SubTag": "thp",
       "Description": [
-        "Thompson"
+        "Thompson",
+        "N\u0142e\u0294kepmxc\u00EDn",
+        "Thompson River Salish"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -68140,7 +68150,8 @@
       "Type": "Language",
       "SubTag": "tht",
       "Description": [
-        "Tahltan"
+        "Tahltan",
+        "T\u0101\u0142t\u0101n"
       ],
       "Added": "2009-07-29",
       "Comments": [],
@@ -83396,7 +83407,7 @@
       "Type": "Language",
       "SubTag": "zmp",
       "Description": [
-        "Mpuono"
+        "Mbuun"
       ],
       "Added": "2009-07-29",
       "Comments": [],
diff --git a/LanguageTags/Iso6392DataGen.cs b/LanguageTags/Iso6392DataGen.cs
index 7fbe7d5..634bbb2 100644
--- a/LanguageTags/Iso6392DataGen.cs
+++ b/LanguageTags/Iso6392DataGen.cs
@@ -463,7 +463,7 @@ public static Iso6392Data Create() =>
                     Part2B = "gre",
                     Part2T = "ell",
                     Part1 = "el",
-                    RefName = "Greek, Modern (1453-)",
+                    RefName = "Modern Greek (1453-)",
                 },
                 new()
                 {
@@ -891,13 +891,13 @@ public static Iso6392Data Create() =>
                 {
                     Part2B = "nbl",
                     Part1 = "nr",
-                    RefName = "Ndebele, South; South Ndebele",
+                    RefName = "South Ndebele",
                 },
                 new()
                 {
                     Part2B = "nde",
                     Part1 = "nd",
-                    RefName = "Ndebele, North; North Ndebele",
+                    RefName = "North Ndebele",
                 },
                 new()
                 {
@@ -916,7 +916,7 @@ public static Iso6392Data Create() =>
                     Part1 = "ne",
                     RefName = "Nepali",
                 },
-                new() { Part2B = "new", RefName = "Nepal Bhasa; Newari" },
+                new() { Part2B = "new", RefName = "Nepal Bhasa; Newar; Newari" },
                 new() { Part2B = "nia", RefName = "Nias" },
                 new() { Part2B = "nic", RefName = "Niger-Kordofanian languages" },
                 new() { Part2B = "niu", RefName = "Niuean" },
@@ -924,13 +924,13 @@ public static Iso6392Data Create() =>
                 {
                     Part2B = "nno",
                     Part1 = "nn",
-                    RefName = "Norwegian Nynorsk; Nynorsk, Norwegian",
+                    RefName = "Norwegian Nynorsk",
                 },
                 new()
                 {
                     Part2B = "nob",
                     Part1 = "nb",
-                    RefName = "Bokmål, Norwegian; Norwegian Bokmål",
+                    RefName = "Norwegian Bokmål",
                 },
                 new() { Part2B = "nog", RefName = "Nogai" },
                 new() { Part2B = "non", RefName = "Norse, Old" },
diff --git a/LanguageTags/Rfc5646DataGen.cs b/LanguageTags/Rfc5646DataGen.cs
index a096461..cf88308 100644
--- a/LanguageTags/Rfc5646DataGen.cs
+++ b/LanguageTags/Rfc5646DataGen.cs
@@ -9,7 +9,7 @@ public partial class Rfc5646Data
     public static Rfc5646Data Create() =>
         new()
         {
-            FileDate = new DateOnly(2025, 7, 15),
+            FileDate = new DateOnly(2025, 8, 25),
             RecordList =
             [
                 new()
@@ -5338,7 +5338,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "asb",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Assiniboine"],
+                    Description = [@"Assiniboine", @"Nakoda Assiniboine"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -5629,7 +5629,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "atj",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Atikamekw"],
+                    Description = [@"Atikamekw", @"Nehirowimowin"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -13967,7 +13967,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "clc",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Chilcotin"],
+                    Description = [@"Chilcotin", @"Tsilhqot’in"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -14040,7 +14040,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "clm",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Clallam"],
+                    Description = [@"Klallam", @"Clallam"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -23683,7 +23683,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "haa",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Han"],
+                    Description = [@"Hän"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -33393,7 +33393,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "kwk",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Kwakiutl"],
+                    Description = [@"Kwak'wala", @"Kwakiutl"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -39119,7 +39119,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "mhn",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Mócheno"],
+                    Description = [@"Mòcheno"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -55688,7 +55688,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "sec",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Sechelt"],
+                    Description = [@"Sechelt", @"She shashishalhem"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -56310,7 +56310,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "shs",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Shuswap"],
+                    Description = [@"Shuswap", @"Secwepemctsín"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -58103,7 +58103,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "squ",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Squamish"],
+                    Description = [@"Squamish", @"Sḵwx̱wú7mesh sníchim"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -61027,7 +61027,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "thp",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Thompson"],
+                    Description = [@"Thompson", @"Nłeʔkepmxcín", @"Thompson River Salish"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -61063,7 +61063,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "tht",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Tahltan"],
+                    Description = [@"Tahltan", @"Tāłtān"],
                     Comments = [],
                     Prefix = [],
                 },
@@ -74729,7 +74729,7 @@ public static Rfc5646Data Create() =>
                     Type = RecordType.Language,
                     SubTag = "zmp",
                     Added = new DateOnly(2009, 7, 29),
-                    Description = [@"Mpuono"],
+                    Description = [@"Mbuun"],
                     Comments = [],
                     Prefix = [],
                 },