diff --git a/.claude-plugin/plugin.json b/.claude-plugin/plugin.json
index 1c9a27d..5cde397 100644
--- a/.claude-plugin/plugin.json
+++ b/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "agent-observer",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "description": "Measure agent work across Codex, Claude Code, OpenCode and Grok Build from native records, and compare behavior by model and AgentsMD version.",
   "author": {
     "name": "toolboxmd",
diff --git a/.codex-plugin/plugin.json b/.codex-plugin/plugin.json
index e0abe13..6abc112 100644
--- a/.codex-plugin/plugin.json
+++ b/.codex-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "agent-observer",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "description": "Measure agent work across Codex, Claude Code, OpenCode and Grok Build from native records, and compare behavior by model and AgentsMD version.",
   "author": {
     "name": "toolboxmd",
diff --git a/.grok-plugin/plugin.json b/.grok-plugin/plugin.json
index 20f894d..95702a8 100644
--- a/.grok-plugin/plugin.json
+++ b/.grok-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "agent-observer",
-  "version": "1.3.0",
+  "version": "1.4.0",
   "description": "Measure agent work across Codex, Claude Code, OpenCode and Grok Build from native records, and compare behavior by model and AgentsMD version.",
   "author": {
     "name": "toolboxmd",
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5fe9ae5..e811c88 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## [Unreleased]
+## [1.4.0] - 2026-10-19
 
 ### Added
 
diff --git a/VERSION b/VERSION
index f0bb29e..88c5fb8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.3.0
+1.4.0