diff --git a/CHANGES.md b/CHANGES.md
index cc37d1e6..dd8cf122 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,12 @@
 # Changelog
 
+### 5.3.1 (2023-11-16)
+- bugfix: make sure risky grading criterion cannot break question
+- bugfix: make sure grading does not lead to invalid question state
+- revert workaround from 5.2.2 (TinyMCE too small), as bug was fixed upstream
+- internal: improvements to some tests
+- internal: update GitHub actions
+
 ### 5.3.0 (2023-10-09)
 - assure compatibility with Moodle 4.3 and PHP 8.2
 - enhancement: different feedback for unique / non-unique correct answer
diff --git a/version.php b/version.php
index ceca8bcc..f0e4a26c 100644
--- a/version.php
+++ b/version.php
@@ -25,7 +25,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'qtype_formulas';
-$plugin->version = 2023100900;
+$plugin->version = 2023111600;
 
 $plugin->cron = 0;
 $plugin->requires = 2017111300;
@@ -35,6 +35,6 @@
     'qtype_multichoice' => 2015111600,
 );
 $plugin->supported = [39, 403];
-$plugin->release = '5.3.0 for Moodle 3.9+';
+$plugin->release = '5.3.1 for Moodle 3.9+';
 
 $plugin->maturity = MATURITY_STABLE;