diff --git a/docs/format-changelog.rst b/docs/format-changelog.rst
index ca5f9fb..e085024 100644
--- a/docs/format-changelog.rst
+++ b/docs/format-changelog.rst
@@ -94,3 +94,12 @@ Added
 ~~~~~
 
 - ``build_system`` property to pre-select OE or Isar.
+
+Version 11
+----------
+
+Changed behavior
+~~~~~~~~~~~~~~~~
+
+- String item ``includes`` are now using repo-relative paths. File-relative is
+  still supported by issues a deprecation warning.
diff --git a/kas/__version__.py b/kas/__version__.py
index b007bbf..b1dfb2f 100644
--- a/kas/__version__.py
+++ b/kas/__version__.py
@@ -28,5 +28,5 @@ __copyright__ = 'Copyright (c) Siemens AG, 2017-2020'
 __version__ = '2.5'
 
 # Please update docs/format-changelog.rst when changing the file version.
-__file_version__ = 10
+__file_version__ = 11
 __compatible_file_version__ = 1