diff --git a/HISTORY.md b/HISTORY.md
index 065a5cc..1228c21 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -5,11 +5,22 @@ Changelog
 (unreleased)
 ------------
 
+Fix
+~~~
+- Fix internal server error, refs NOISSUE. [Simon Diesenreiter]
+
+
+0.9.12 (2026-04-11)
+-------------------
+
 Fix
 ~~~
 - Remove heuristic decision making fallbacks, refs NOISSUE. [Simon
   Diesenreiter]
 
+Other
+~~~~~
+
 
 0.9.11 (2026-04-11)
 -------------------
diff --git a/ai_software_factory/VERSION b/ai_software_factory/VERSION
index 583b27a..62ea259 100644
--- a/ai_software_factory/VERSION
+++ b/ai_software_factory/VERSION
@@ -1 +1 @@
-0.9.12
+0.9.13