diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index b7645fe..de985bc 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -6,7 +6,7 @@
   },
   "metadata": {
     "description": "Project management plugins with Gitea and NetBox integrations",
-    "version": "3.2.0"
+    "version": "4.0.0"
   },
   "plugins": [
     {
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ac2eba3..c03c20b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to the Leo Claude Marketplace will be documented in this fil
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## [Unreleased]
+## [4.0.0] - 2026-01-25
 
 ### Added
 
diff --git a/README.md b/README.md
index 4220b20..be30d59 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Leo Claude Marketplace - v3.2.0
+# Leo Claude Marketplace - v4.0.0
 
 A collection of Claude Code plugins for project management, infrastructure automation, and development workflows.