diff --git a/src/corelib/time/qtimezonelocale_data_p.h b/src/corelib/time/qtimezonelocale_data_p.h
index a90ba954de0..b85618ebcc2 100644
--- a/src/corelib/time/qtimezonelocale_data_p.h
+++ b/src/corelib/time/qtimezonelocale_data_p.h
@@ -58,8 +58,8 @@ namespace QtTimeZoneLocale {
 // GENERATED PART STARTS HERE
 
 /*
-    This part of the file was generated on 2025-01-13 from the
-    Common Locale Data Repository v46
+    This part of the file was generated on 2025-02-07 from the
+    Common Locale Data Repository v46.1
 
     http://www.unicode.org/cldr/
 
@@ -51631,6 +51631,7 @@ static inline constexpr LocaleZoneExemplar localeZoneExemplarTable[] = {
     {  681, 7211,     467,  7, }, // Indian/Reunion
     {  681, 3157,     474,  5, }, // Pacific/Chuuk
     {  681, 3096,     479,  7, }, // Pacific/Pohnpei
+    {  682,    0,       0,  0, } // Terminal row
 }; // Exemplar city table
 
 // Sorted by locale index, then iana name
@@ -52492,6 +52493,7 @@ static inline constexpr LocaleZoneNames localeZoneNameTable[] = {
     {  678, 2501,       0,       0,    8483,    0,    0,    0,  0,  0, 19,  0,  0,  0, }, // Europe/London
     {  679, 2455,       0,       0,       0,    0,    0,    0,  0,  0,  0,  0,  3,  0, }, // Etc/UTC Kara-Kalpak/Cyrillic/Uzbekistan
     {  681, 2455,       0,       0,       0,    0,    0,    0,  0,  0,  0,  0,  3,  0, }, // Etc/UTC Swampy Cree/Canadian Aboriginal/Canada
+    {  682,    0,       0,       0,       0,    0,    0,    0,  0,  0,  0,  0,  0,  0, } // Terminal row
 }; // Zone naming table
 
 // Sorted by locale index, then meta key
@@ -79720,6 +79722,7 @@ static inline constexpr LocaleMetaZoneLongNames localeMetaZoneLongNameTable[] =
     {  678, 1862,  787179,  787194,  787219, 15, 25, 21, }, // Yakutsk
     {  678, 1870,  787240,  787260,  787290, 20, 30, 26, }, // Yekaterinburg
     {  681,  788,       0,  979873,       0,  0, 20,  0, }, // GMT Swampy Cree/Canadian Aboriginal/Canada
+    {  682,    0,       0,       0,       0,  0,  0,  0, } // Terminal row
 }; // Metazone long name table
 
 // Sorted by locale index, then meta key
@@ -81366,6 +81369,7 @@ static inline constexpr LocaleMetaZoneShortNames localeMetaZoneShortNameTable[]
     {  656,  135,  153,  153,  156,  3,  3,  4, }, // Amazon
     {  656,  437,  376,  376,  379,  3,  3,  4, }, // Brasilia
     {  672,  788,    0, 1868,    0,  0,  2,  0, }, // GMT Anii/Latin/Benin
+    {  682,    0,    0,    0,    0,  0,  0,  0, } // Terminal Row
 }; // Metazone short name table
 
 // Indexing matches that of locale_data in qlocale_data_p.h
diff --git a/util/locale_database/qlocalexml2cpp.py b/util/locale_database/qlocalexml2cpp.py
index b51e95930c4..7f2e05c8a17 100755
--- a/util/locale_database/qlocalexml2cpp.py
+++ b/util/locale_database/qlocalexml2cpp.py
@@ -401,6 +401,10 @@ class LocaleZoneDataWriter (LocaleSourceEditor):
 
     def localeData(self, locales: dict[tuple[int, int, int], Locale],
                    names: list[tuple[int, int, int]]) -> None:
+        assert len(names) == len(locales), 'Names should just be a sorted list of locale.keys()'
+        # Tables need a terminal row whose localeIndex is len(names) for the
+        # sake of an assertion in QTZL.cpp's findTableEntryFor(); the end() of
+        # each locale's range of rows must be a valid row.
         out: Callable[[str], int] = self.writer.write
 
         out('// Sorted by locale index, then iana name\n')
@@ -425,7 +429,8 @@ class LocaleZoneDataWriter (LocaleSourceEditor):
                        if index == locale.exemplarStart else f', // {name}\n')
                     )
                 index += 1
-        out('}; // Exemplar city table\n')
+        out(formatLine(len(names), 0, 0, 0) + ' // Terminal row\n'
+            + '}; // Exemplar city table\n')
         if index >= (1 << 32):
             raise Error(f'Exemplar table has too many ({index}) entries')
         exemplarRowCount: int = index
@@ -462,7 +467,8 @@ class LocaleZoneDataWriter (LocaleSourceEditor):
                        if index == locale.zoneStart else f', // {name}\n')
                     )
                 index += 1
-        out('}; // Zone naming table\n')
+        out(formatLine(*((len(names), 0) + (0, 0) * 6)) + ' // Terminal row\n'
+            + '}; // Zone naming table\n')
         if index >= (1 << 16):
             raise Error(f'Zone naming table has too many ({index}) entries')
         localeNameCount: int = index
@@ -504,7 +510,8 @@ class LocaleZoneDataWriter (LocaleSourceEditor):
                        if index == locale.metaZoneLongStart else f', // {meta}\n')
                     )
                 index += 1
-        out('}; // Metazone long name table\n')
+        out(formatLine(*((len(names), 0) + (0, 0) * 3)) + ' // Terminal row\n'
+            + '}; // Metazone long name table\n')
         if index >= (1 << 32):
             raise Error(f'Metazone long name table has too many ({index}) entries')
         metaLongCount: int = index
@@ -540,7 +547,8 @@ class LocaleZoneDataWriter (LocaleSourceEditor):
                        if index == locale.metaZoneShortStart else f', // {meta}\n')
                     )
                 index += 1
-        out('}; // Metazone short name table\n')
+        out(formatLine(*((len(names), 0) + (0, 0) * 3)) + ' // Terminal Row\n'
+            + '}; // Metazone short name table\n')
         if index >= (1 << 16):
             raise Error(f'Metazone short name table has too many ({index}) entries')
         metaShortCount: int = index