diff --git a/CHANGELOG.md b/CHANGELOG.md
index 76e3c921..6468636f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ All notable changes to EigenScript are documented here.
 
 ## [Unreleased]
 
+## [0.43.0] - 2026-09-06
+
 ### Breaking changes
 
 - **`report` and `report_value` are reserved observer forms (#1102): they
diff --git a/VERSION b/VERSION
index 787ffc30..8298bb08 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.42.0
+0.43.0
diff --git a/docs/llms.txt b/docs/llms.txt
index d7bd9872..ff4b2f97 100644
--- a/docs/llms.txt
+++ b/docs/llms.txt
@@ -1,6 +1,6 @@
 # EigenScript — single-file reference for language models
 
-> EigenScript v0.42.0. A small dynamically-typed language with one distinctive
+> EigenScript v0.43.0. A small dynamically-typed language with one distinctive
 > feature: an **observer** tracks every value's entropy/trend on each
 > assignment, so convergence, stability, and oscillation are first-class. This
 > file is the whole surface you need to generate correct `.eigs`. Models