diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed4d6b4..be2e479 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+## [3.27.9] - 2026-02-21
+
 ### Documentation
 
 - **Claude Code Releases**: Updated tracking to v2.1.50
diff --git a/README.md b/README.md
index 9a2cb7b..d83a2cf 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/FlorianBruniaux/claude-code-ultimate-guide/stargazers"><img src="https://img.shields.io/github/stars/FlorianBruniaux/claude-code-ultimate-guide?style=for-the-badge" alt="Stars"/></a>
-  <a href="./CHANGELOG.md"><img src="https://img.shields.io/badge/Updated-Feb_20,_2026_·_v3.27.8-brightgreen?style=for-the-badge" alt="Last Update"/></a>
+  <a href="./CHANGELOG.md"><img src="https://img.shields.io/badge/Updated-Feb_21,_2026_·_v3.27.9-brightgreen?style=for-the-badge" alt="Last Update"/></a>
   <a href="./quiz/"><img src="https://img.shields.io/badge/Quiz-274_questions-orange?style=for-the-badge" alt="Quiz"/></a>
   <a href="./examples/"><img src="https://img.shields.io/badge/Templates-172-green?style=for-the-badge" alt="Templates"/></a>
   <a href="./guide/security-hardening.md"><img src="https://img.shields.io/badge/🛡️_Threat_DB-19_CVEs_·_655_malicious_skills-red?style=for-the-badge" alt="Threat Database"/></a>
@@ -775,7 +775,7 @@ See [CONTRIBUTING.md](./CONTRIBUTING.md) for guidelines.
 
 ---
 
-*Version 3.27.8 | Updated daily · Feb 20, 2026 | Crafted with Claude*
+*Version 3.27.9 | Updated daily · Feb 21, 2026 | Crafted with Claude*
 
 <!-- SEO Keywords -->
 <!-- claude code, claude code tutorial, anthropic cli, ai coding assistant, claude code mcp,
diff --git a/VERSION b/VERSION
index f641ba7..1a25c38 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.27.8
+3.27.9
diff --git a/guide/cheatsheet.md b/guide/cheatsheet.md
index a0001f4..a032c30 100644
--- a/guide/cheatsheet.md
+++ b/guide/cheatsheet.md
@@ -12,7 +12,7 @@ tags: [cheatsheet, reference]
 
 **Written with**: Claude (Anthropic)
 
-**Version**: 3.27.8 | **Last Updated**: February 2026
+**Version**: 3.27.9 | **Last Updated**: February 2026
 
 ---
 
@@ -545,4 +545,4 @@ where.exe claude; claude doctor; claude mcp list
 
 **Author**: Florian BRUNIAUX | [@Méthode Aristote](https://methode-aristote.fr) | Written with Claude
 
-*Last updated: February 2026 | Version 3.27.8*
+*Last updated: February 2026 | Version 3.27.9*
diff --git a/guide/ultimate-guide.md b/guide/ultimate-guide.md
index 85a7320..9083a3e 100644
--- a/guide/ultimate-guide.md
+++ b/guide/ultimate-guide.md
@@ -16,7 +16,7 @@ tags: [guide, reference, workflows, agents, hooks, mcp, security]
 
 **Last updated**: January 2026
 
-**Version**: 3.27.8
+**Version**: 3.27.9
 
 ---
 
@@ -4354,7 +4354,7 @@ The `.claude/` folder is your project's Claude Code directory for memory, settin
 | Personal preferences | `CLAUDE.md` | ❌ Gitignore |
 | Personal permissions | `settings.local.json` | ❌ Gitignore |
 
-### 3.27.8 Version Control & Backup
+### 3.27.9 Version Control & Backup
 
 **Problem**: Without version control, losing your Claude Code configuration means hours of manual reconfiguration across agents, skills, hooks, and MCP servers.
 
@@ -19976,4 +19976,4 @@ We'll evaluate and add it to this section if it meets quality criteria.
 
 **Contributions**: Issues and PRs welcome.
 
-**Last updated**: January 2026 | **Version**: 3.27.8
+**Last updated**: January 2026 | **Version**: 3.27.9
diff --git a/machine-readable/reference.yaml b/machine-readable/reference.yaml
index 9ab2ae2..d0303f1 100644
--- a/machine-readable/reference.yaml
+++ b/machine-readable/reference.yaml
@@ -3,7 +3,7 @@
 # Source: guide/ultimate-guide.md
 # Purpose: Condensed index for LLMs to quickly answer user questions about Claude Code
 
-version: "3.27.8"
+version: "3.27.9"
 updated: "2026-02-17"
 
 # ════════════════════════════════════════════════════════════════
@@ -230,7 +230,7 @@ deep_dive:
   third_party_toad: "https://github.com/batrachianai/toad"
   third_party_conductor: "https://docs.conductor.build"
   # Configuration Management & Backup (Added 2026-02-02)
-  config_management_guide: "guide/ultimate-guide.md:4085"  # Section 3.27.8
+  config_management_guide: "guide/ultimate-guide.md:4085"  # Section 3.27.9
   config_hierarchy: "guide/ultimate-guide.md:4095"  # Global → Project → Local precedence
   config_git_strategy_project: "guide/ultimate-guide.md:4110"  # What to commit in .claude/
   config_git_strategy_global: "guide/ultimate-guide.md:4133"  # Version control ~/.claude/
@@ -1258,7 +1258,7 @@ ecosystem:
       - "Cross-links modified → Update all 4 repos"
     history:
       - date: "2026-01-20"
-        event: "Code Landing sync v3.27.8, 66 templates, cross-links"
+        event: "Code Landing sync v3.27.9, 66 templates, cross-links"
         commit: "5b5ce62"
       - date: "2026-01-20"
         event: "Cowork Landing fix (paths, README, UI badges)"
@@ -1270,7 +1270,7 @@ ecosystem:
 onboarding_matrix_meta:
   version: "2.0.0"
   last_updated: "2026-02-05"
-  aligned_with_guide: "3.27.8"
+  aligned_with_guide: "3.27.9"
   changelog:
     - version: "2.0.0"
       date: "2026-02-05"
@@ -1298,7 +1298,7 @@ onboarding_matrix:
       core: [rules, sandbox_native_guide, commands]
       time_budget: "5 min"
       topics_max: 3
-      note: "SECURITY FIRST - sandbox before commands (v3.27.8 critical fix)"
+      note: "SECURITY FIRST - sandbox before commands (v3.27.9 critical fix)"
 
     beginner_15min:
       core: [rules, sandbox_native_guide, workflow, essential_commands]
@@ -1383,7 +1383,7 @@ onboarding_matrix:
         - default: agent_validation_checklist
       time_budget: "60 min"
       topics_max: 6
-      note: "Dual-instance pattern for quality workflows (v3.27.8)"
+      note: "Dual-instance pattern for quality workflows (v3.27.9)"
 
   learn_security:
     intermediate_30min:
@@ -1394,7 +1394,7 @@ onboarding_matrix:
         - default: permission_modes
       time_budget: "30 min"
       topics_max: 4
-      note: "NEW goal (v3.27.8) - Security-focused learning path"
+      note: "NEW goal (v3.27.9) - Security-focused learning path"
 
     power_60min:
       core: [sandbox_native_guide, mcp_secrets_management, security_hardening]
@@ -1419,7 +1419,7 @@ onboarding_matrix:
       core: [rules, sandbox_native_guide, workflow, essential_commands, context_management, plan_mode]
       time_budget: "60 min"
       topics_max: 6
-      note: "Security foundation + core workflow (v3.27.8 sandbox added)"
+      note: "Security foundation + core workflow (v3.27.9 sandbox added)"
 
     intermediate_120min:
       core: [plan_mode, agents, skills, config_hierarchy, git_mcp_guide, hooks, mcp_servers]