diff --git a/lib/db/services.php b/lib/db/services.php
index 2d61869478b47..dc9bc28bc0425 100644
--- a/lib/db/services.php
+++ b/lib/db/services.php
@@ -228,6 +228,7 @@
         'capabilities' => 'moodle/calendar:manageentries, moodle/calendar:manageownentries, moodle/calendar:managegroupentries',
         'ajax' => true,
         'services' => array(MOODLE_OFFICIAL_MOBILE_SERVICE),
+        'readonlysession' => true,
     ),
     'core_calendar_get_action_events_by_course' => array(
         'classname' => 'core_calendar_external',
@@ -669,6 +670,7 @@
         'type' => 'read',
         'ajax' => true,
         'services' => array(MOODLE_OFFICIAL_MOBILE_SERVICE),
+        'readonlysession' => true,
     ),
     'core_course_get_recent_courses' => array(
         'classname' => 'core_course_external',
diff --git a/version.php b/version.php
index 5c519ce9afbc3..ba6c1ea4c4e63 100644
--- a/version.php
+++ b/version.php
@@ -29,7 +29,7 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$version  = 2023102700.00;              // YYYYMMDD      = weekly release date of this DEV branch.
+$version  = 2023102700.01;              // YYYYMMDD      = weekly release date of this DEV branch.
                                         //         RR    = release increments - 00 in DEV branches.
                                         //           .XX = incremental changes.
 $release  = '4.4dev (Build: 20231027)'; // Human-friendly version name