diff --git a/Addon.py b/Addon.py
index edea74f3..1710b935 100644
--- a/Addon.py
+++ b/Addon.py
@@ -688,7 +688,7 @@ def get_zip_url(self) -> str:
         else:
             # The ZIP url is based on the location of the main cache file:
             if self.relative_cache_path:
-                cache_file_url = fci.Preferences().get("addon_catalog_cache_url")
+                cache_file_url = fci.Preferences().get("addon_index_cache_url")
                 parsed_url = urlparse(cache_file_url)
                 path_parts = parsed_url.path.rpartition("/")
                 new_path = path_parts[0] + "/" + self.relative_cache_path
diff --git a/AddonManagerTest/app/test_workers_startup.py b/AddonManagerTest/app/test_workers_startup.py
index 13097a4d..49955a91 100644
--- a/AddonManagerTest/app/test_workers_startup.py
+++ b/AddonManagerTest/app/test_workers_startup.py
@@ -42,9 +42,9 @@ def test_no_new_catalog_available(self, mock_network_manager, mock_preferences_c
         )
 
         def get_side_effect(key):
-            if key == "last_fetched_addon_catalog_cache_hash":
+            if key == "last_fetched_addon_index_cache_hash":
                 return "1234567890abcdef"
-            elif key == "addon_catalog_cache_url":
+            elif key == "addon_index_cache_url":
                 return "https://some.url"
             return None
 
@@ -52,7 +52,7 @@ def get_side_effect(key):
 
         # Act
         result = addonmanager_workers_startup.CreateAddonListWorker.new_cache_available(
-            "addon_catalog"
+            "addon_index"
         )
 
         # Assert
@@ -71,9 +71,9 @@ def test_new_catalog_is_available(self, mock_network_manager, mock_preferences_c
         )
 
         def get_side_effect(key):
-            if key == "last_fetched_addon_catalog_cache_hash":
+            if key == "last_fetched_addon_index_cache_hash":
                 return "fedcba0987654321"  # NOT the same hash
-            elif key == "addon_catalog_cache_url":
+            elif key == "addon_index_cache_url":
                 return "https://some.url"
             return None
 
@@ -81,7 +81,7 @@ def get_side_effect(key):
 
         # Act
         result = addonmanager_workers_startup.CreateAddonListWorker.new_cache_available(
-            "addon_catalog"
+            "addon_index"
         )
 
         # Assert
@@ -155,3 +155,44 @@ def test_process_addon_catalog_with_user_override(
 
         # Assert
         self.assertEqual(8, mock_addon_repo_signal.emit.call_count)
+
+    @patch("addonmanager_workers_startup.fci.Preferences")
+    @patch("addonmanager_workers_startup.fci.Console")
+    def test_migrate_catalog_to_index_no_custom_data(self, mock_console, mock_preferences_class):
+        # Arrange
+        def return_no_custom_data(key):
+            return None if key != "addon_catalog_cache_url" else "obsolete"
+
+        mock_preferences_instance = MagicMock()
+        mock_preferences_instance.get = return_no_custom_data
+        mock_preferences_class.return_value = mock_preferences_instance
+        worker = addonmanager_workers_startup.CreateAddonListWorker()
+
+        # Act
+        worker.migrate_catalog_to_index()
+
+        # Assert
+        mock_preferences_instance.set.assert_not_called()
+        mock_console.PrintWarning.assert_not_called()
+
+    @patch("addonmanager_workers_startup.fci.Preferences")
+    @patch("addonmanager_workers_startup.fci.Console")
+    def test_migrate_catalog_to_index_custom_data(self, mock_console, mock_preferences_class):
+
+        # Arrange
+        def return_custom_data(key):
+            return None if key != "addon_catalog_cache_url" else "some custom url"
+
+        mock_preferences_instance = MagicMock()
+        mock_preferences_instance.get = return_custom_data
+        mock_preferences_class.return_value = mock_preferences_instance
+        worker = addonmanager_workers_startup.CreateAddonListWorker()
+
+        # Act
+        worker.migrate_catalog_to_index()
+
+        # Assert
+        mock_preferences_instance.set.assert_called_once_with(
+            "addon_index_cache_url", "some custom url"
+        )
+        mock_console.PrintWarning.assert_called()
diff --git a/addonmanager_preferences_defaults.json b/addonmanager_preferences_defaults.json
index 05665994..cc75e044 100644
--- a/addonmanager_preferences_defaults.json
+++ b/addonmanager_preferences_defaults.json
@@ -24,12 +24,13 @@
     "ViewStyle": 1,
     "WindowHeight": 600,
     "WindowWidth": 800,
-    "addon_catalog_cache_url": "https://addons.freecad.org/addon_catalog_cache.zip",
+    "addon_catalog_cache_url": "obsolete, replaced by addon_index_cache_url",
+    "addon_index_cache_url": "https://addons.freecad.org/addon_index_cache.zip",
     "alwaysAskForToolbar": true,
     "dontShowAddMacroButtonDialog": false,
     "force_git_in_repos": "parts_library",
     "ignored_missing_deps": "",
-    "last_fetched_addon_catalog_cache_hash": "Cache never fetched, no hash available",
+    "last_fetched_addon_index_cache_hash": "Cache never fetched, no hash available",
     "last_fetched_macro_cache_hash": "Cache never fetched, no hash available",
     "macro_cache_url": "https://addons.freecad.org/macro_cache.zip",
     "old_backup_handling": "ask",
diff --git a/addonmanager_workers_startup.py b/addonmanager_workers_startup.py
index b100afde..019f1e1a 100644
--- a/addonmanager_workers_startup.py
+++ b/addonmanager_workers_startup.py
@@ -75,10 +75,12 @@ def run(self):
             self._get_custom_addons()
             self.progress_made.emit("Custom addons loaded", 5, 100)
 
-            addon_cache = self.get_cache("addon_catalog")
+            CreateAddonListWorker.migrate_catalog_to_index()
+
+            addon_cache = self.get_cache("addon_index")
             if addon_cache:
                 self.process_addon_cache(addon_cache)
-            self.progress_made.emit("Addon catalog loaded", 20, 100)
+            self.progress_made.emit("Addon index loaded", 20, 100)
 
             macro_cache = self.get_cache("macro")
             if macro_cache:
@@ -90,6 +92,15 @@ def run(self):
             fci.Console.PrintError(str(e) + "\n")
             return
 
+    @staticmethod
+    def migrate_catalog_to_index():
+        old_catalog_url = fci.Preferences().get("addon_catalog_cache_url")
+        if old_catalog_url.startswith("obsolete"):
+            return  # Nothing to migrate, it was never set to anything else
+        fci.Console.PrintWarning("Custom catalog URL was detected: using as the index URL now\n")
+        fci.Console.PrintWarning(f"URL: {old_catalog_url}\n")
+        fci.Preferences().set("addon_index_cache_url", old_catalog_url)
+
     def _get_custom_addons(self):
 
         # querying custom addons first
diff --git a/package.xml b/package.xml
index f7f210e4..046d60dd 100644
--- a/package.xml
+++ b/package.xml
@@ -5,8 +5,8 @@
     <name>Addon Manager</name>
     <description>Development branch of a tool to install workbenches, macros, themes, etc.</description>
     <icon>Resources/icons/addon_manager.svg</icon>
-    <version>2026.2.9dev</version>
-    <date>2026-02-09</date>
+    <version>2026.2.11dev</version>
+    <date>2026-02-11</date>
     <maintainer email='chennes@freecad.org'>Chris Hennes</maintainer>
     <author email = 'yorik@uncreated.net'>Yorik van Havre</author>
     <author>Jonathan Wiedemann</author>