diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24cab3f..543ec7a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
 
+## [0.17.1] - 2026-02-15
+
+### Changed
+
+- `.takt/.gitignore` テンプレートをホワイトリスト方式に変更 — デフォルトで全ファイルを無視し、`config.yaml` のみを追跡対象に。新しいファイルが追加されても ignore 漏れが発生しない
+
 ## [0.17.0] - 2026-02-15
 
 ### Added
diff --git a/builtins/project/dotgitignore b/builtins/project/dotgitignore
index 71aba95..d4fbe9b 100644
--- a/builtins/project/dotgitignore
+++ b/builtins/project/dotgitignore
@@ -1,11 +1,8 @@
-# Temporary files
-logs/
-runs/
-completed/
-tasks/
-worktrees/
-worktree-meta/
-clone-meta/
-worktree-sessions/
-agent_sessions.json
-input_history
+# Ignore everything by default
+*
+
+# This file itself
+!.gitignore
+
+# Project configuration
+!config.yaml
diff --git a/package-lock.json b/package-lock.json
index 94fc58b..c7e197a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "takt",
-  "version": "0.17.0",
+  "version": "0.17.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "takt",
-      "version": "0.17.0",
+      "version": "0.17.1",
       "license": "MIT",
       "dependencies": {
         "@anthropic-ai/claude-agent-sdk": "^0.2.37",
diff --git a/package.json b/package.json
index 4abf12b..4eb89ad 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "takt",
-  "version": "0.17.0",
+  "version": "0.17.1",
   "description": "TAKT: TAKT Agent Koordination Topology - AI Agent Piece Orchestration",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",