diff --git a/docs/format-changelog.rst b/docs/format-changelog.rst
index d1f3b90..c8a7218 100644
--- a/docs/format-changelog.rst
+++ b/docs/format-changelog.rst
@@ -111,3 +111,13 @@ Added
 
 - ``menu_configuration`` key stores the selections done via ``kas menu`` in a
   configuration file. It is only evaluated by that plugin.
+
+Version 12
+----------
+
+Added
+~~~~~
+
+- For repositories, ``url`` and ``path`` can now be overridden with a
+  null-value to switch between version-controlled repositories and unversioned
+  local folders.
diff --git a/kas/__version__.py b/kas/__version__.py
index 63c3221..60bab95 100644
--- a/kas/__version__.py
+++ b/kas/__version__.py
@@ -28,5 +28,5 @@ __copyright__ = 'Copyright (c) Siemens AG, 2017-2020'
 __version__ = '3.0.2'
 
 # Please update docs/format-changelog.rst when changing the file version.
-__file_version__ = 11
+__file_version__ = 12
 __compatible_file_version__ = 1
diff --git a/kas/schema-kas.json b/kas/schema-kas.json
index 60fa7dd..ca4b513 100644
--- a/kas/schema-kas.json
+++ b/kas/schema-kas.json
@@ -125,7 +125,14 @@
                                 "type": "string"
                             },
                             "url": {
-                                "type": "string"
+                                "oneOf": [
+                                    {
+                                        "type": "string"
+                                    },
+                                    {
+                                        "type": "null"
+                                    }
+                                ]
                             },
                             "type": {
                                 "type": "string"
@@ -134,7 +141,14 @@
                                 "type": "string"
                             },
                             "path": {
-                                "type": "string"
+                                "oneOf": [
+                                    {
+                                        "type": "string"
+                                    },
+                                    {
+                                        "type": "null"
+                                    }
+                                ]
                             },
                             "layers": {
                                 "type": "object",