diff --git a/bgt/bgt.tp2 b/bgt/bgt.tp2
index 80cbc2f..ff03cb3 100644
--- a/bgt/bgt.tp2
+++ b/bgt/bgt.tp2
@@ -21,7 +21,7 @@ BACKUP ~bgt/backup~
 
 SUPPORT ~http://www.shsforums.net/forum/261-bgt-weidu/~
 
-VERSION ~v1.23~
+VERSION ~v1.23.1~
 
 README ~bgt/help/[%LANGUAGE%]bgtreadme.htm~ ~bgt/help/[english]bgtreadme.htm~
 
diff --git a/bgt/help/[english]bgtreadme.htm b/bgt/help/[english]bgtreadme.htm
index 7f15e13..bf89190 100644
--- a/bgt/help/[english]bgtreadme.htm
+++ b/bgt/help/[english]bgtreadme.htm
@@ -922,8 +922,15 @@ <h2>Legalese</h2>
         <a name="version" id="version"></a>
         <div class="content">
           <h2>Version history</h2>
-          <p><a href="#" onclick="toggle('1.23');toggle('1.22');toggle('1.21');toggle('1.20');toggle('1.19');toggle('1.18');toggle('1.17');toggle('1.16');toggle('1.15');toggle('1.14');toggle('1.13');toggle('1.12');toggle('1.11');toggle('1.10');toggle('1.09');toggle('1.08u');toggle('1.08');toggle('1.07');toggle('1.06Updated'); toggle('1.06'); toggle('1.05b'); toggle('1.05a'); toggle('1.04'); toggle('1.03'); toggle('1.02f'); toggle('1.02'); toggle('1.01'); toggle('1.00'); toggle('0.99ZETAUpdated'); toggle('0.99ZETA'); toggle('0.99BETA4'); toggle('0.99BETA2'); toggle('0.99BETA'); toggle('0.94BETA'); toggle('0.9BETA'); toggle('0.8'); return false;">Expand/Collapse All</a></p>
+          <p><a href="#" onclick="toggle('1.23.1');toggle('1.23');toggle('1.22');toggle('1.21');toggle('1.20');toggle('1.19');toggle('1.18');toggle('1.17');toggle('1.16');toggle('1.15');toggle('1.14');toggle('1.13');toggle('1.12');toggle('1.11');toggle('1.10');toggle('1.09');toggle('1.08u');toggle('1.08');toggle('1.07');toggle('1.06Updated'); toggle('1.06'); toggle('1.05b'); toggle('1.05a'); toggle('1.04'); toggle('1.03'); toggle('1.02f'); toggle('1.02'); toggle('1.01'); toggle('1.00'); toggle('0.99ZETAUpdated'); toggle('0.99ZETA'); toggle('0.99BETA4'); toggle('0.99BETA2'); toggle('0.99BETA'); toggle('0.94BETA'); toggle('0.9BETA'); toggle('0.8'); return false;">Expand/Collapse All</a></p>
 
+          <h6><a href="#" onclick="toggle('1.23.1'); return false;">Version 1.23.1 (03 Dec 2023)</a></h6>
+          <div id="1.23.1" class="vlisthide">
+          <ul>
+            <li>Fixed incorrect worldmap headers which caused invalid area availability and travel times (thanks to LordFirkraag)</li>
+            <li>Compatibility with BG1 spawn system in GemRB (thanks to Fernside2 and lynx)</li>
+          </ul>
+          </div>
           <h6><a href="#" onclick="toggle('1.23'); return false;">Version 1.23 (16 Aug 2023)</a></h6>
           <div id="1.23" class="vlisthide">
           <ul>