diff --git a/az_locale/hooks.py b/az_locale/hooks.py
index 01495b6..1c25b30 100644
--- a/az_locale/hooks.py
+++ b/az_locale/hooks.py
@@ -62,6 +62,7 @@ doctype_list_js = {
     "Role": _listview_subject_js,
     "Role Profile": _listview_subject_js,
     "UOM": _listview_subject_js,
+    "UOM Category": _listview_subject_js,
     "Territory": _listview_subject_js,
     "Price List": _listview_subject_js,
 }
diff --git a/az_locale/locale/setup_locale.py b/az_locale/locale/setup_locale.py
index eac6549..398542a 100644
--- a/az_locale/locale/setup_locale.py
+++ b/az_locale/locale/setup_locale.py
@@ -117,6 +117,13 @@ def _merge_extras(dest_file, extras_file):
         except AttributeError:
             pass
         dest[msg.id] = msg
+        # babel's Catalog.__setitem__ only merges metadata for an existing key —
+        # it does NOT overwrite the translation string. Force it so extras wins
+        # on conflict (otherwise we can add new msgids but never correct an
+        # existing upstream translation).
+        existing = dest.get(msg.id, msg.context)
+        if existing is not None:
+            existing.string = msg.string
         count += 1
 
     try:
diff --git a/az_locale/locale/translations_az/erpnext/extras.po b/az_locale/locale/translations_az/erpnext/extras.po
index 294b211..ccd28b0 100644
--- a/az_locale/locale/translations_az/erpnext/extras.po
+++ b/az_locale/locale/translations_az/erpnext/extras.po
@@ -208,3 +208,47 @@ msgstr "Kommunikasiya"
 # === Territory ===
 msgid "Azerbaijan"
 msgstr "Azərbaycan"
+
+#. UOM Category names — DocType fixture data (autoname=field:category_name),
+#. shown as the `category` column of UOM Conversion Factor. UOM Category gets
+#. translated_doctype=1 forced via az_locale/locale/update_doctype.py.
+#. "Force" and "Area" override upstream mistranslations (verb / "region").
+# === UOM Category ===
+msgid "Mass"
+msgstr "Kütlə"
+
+msgid "Temperature"
+msgstr "Temperatur"
+
+msgid "Magnetic Induction"
+msgstr "Maqnit induksiyası"
+
+msgid "Electric Current"
+msgstr "Elektrik cərəyanı"
+
+msgid "Electrical Charge"
+msgstr "Elektrik yükü"
+
+msgid "Frequency and Wavelength"
+msgstr "Tezlik və dalğa uzunluğu"
+
+msgid "Density"
+msgstr "Sıxlıq"
+
+msgid "Power"
+msgstr "Güc"
+
+msgid "Pressure"
+msgstr "Təzyiq"
+
+msgid "Volume"
+msgstr "Həcm"
+
+msgid "Speed"
+msgstr "Sürət"
+
+msgid "Force"
+msgstr "Qüvvə"
+
+msgid "Area"
+msgstr "Sahə"
diff --git a/az_locale/locale/translations_ru/erpnext/extras.po b/az_locale/locale/translations_ru/erpnext/extras.po
index bfcaa8a..c22e4be 100644
--- a/az_locale/locale/translations_ru/erpnext/extras.po
+++ b/az_locale/locale/translations_ru/erpnext/extras.po
@@ -208,3 +208,47 @@ msgstr "Коммуникация"
 # === Territory ===
 msgid "Azerbaijan"
 msgstr "Азербайджан"
+
+#. UOM Category names — DocType fixture data (autoname=field:category_name),
+#. shown as the `category` column of UOM Conversion Factor. UOM Category gets
+#. translated_doctype=1 forced via az_locale/locale/update_doctype.py.
+#. "Force" and "Area" override upstream mistranslations (verb / "region").
+# === UOM Category ===
+msgid "Mass"
+msgstr "Масса"
+
+msgid "Temperature"
+msgstr "Температура"
+
+msgid "Magnetic Induction"
+msgstr "Магнитная индукция"
+
+msgid "Electric Current"
+msgstr "Электрический ток"
+
+msgid "Electrical Charge"
+msgstr "Электрический заряд"
+
+msgid "Frequency and Wavelength"
+msgstr "Частота и длина волны"
+
+msgid "Density"
+msgstr "Плотность"
+
+msgid "Power"
+msgstr "Мощность"
+
+msgid "Pressure"
+msgstr "Давление"
+
+msgid "Volume"
+msgstr "Объём"
+
+msgid "Speed"
+msgstr "Скорость"
+
+msgid "Force"
+msgstr "Сила"
+
+msgid "Area"
+msgstr "Площадь"
diff --git a/az_locale/locale/update_doctype.py b/az_locale/locale/update_doctype.py
index d83e9b6..eab6a3d 100644
--- a/az_locale/locale/update_doctype.py
+++ b/az_locale/locale/update_doctype.py
@@ -15,6 +15,10 @@ TRANSLATED_DOCTYPES = [
         "erpnext/buying/doctype/supplier_scorecard_variable/supplier_scorecard_variable.json",
         "Supplier Scorecard Variable",
     ),
+    (
+        "erpnext/stock/doctype/uom_category/uom_category.json",
+        "UOM Category",
+    ),
 ]
 
 
diff --git a/az_locale/public/js/translate_listview_subjects.js b/az_locale/public/js/translate_listview_subjects.js
index 7a0b006..b0f1711 100644
--- a/az_locale/public/js/translate_listview_subjects.js
+++ b/az_locale/public/js/translate_listview_subjects.js
@@ -18,6 +18,7 @@ const AZ_LOCALE_SUBJECT_FIELDS = {
 	"Role": "name",
 	"Role Profile": "role_profile",
 	UOM: "name",
+	"UOM Category": "name",
 	Territory: "name",
 	"Price List": "name",
 };