diff --git a/README.md b/README.md
index 3b1fe92..59dd1c9 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 [日本語版](README_jp.md)
 
-A type-safe state management library for SwiftUI applications. Flow provides a unidirectional data flow architecture and supports Observation and Swift 6 Approachable Concurrency.
+A type-safe state management library for SwiftUI applications. Flow provides a unidirectional data flow architecture and supports Observation and Swift 6 Concurrency.
 
 <p align="center">
     <img src="flow-diagram.svg" alt="Flow Architecture Diagram" />
@@ -181,7 +181,7 @@ final class State {
 - Less boilerplate code
 - Integrates with SwiftUI's standard APIs
 
-### Approachable Concurrency
+### Swift 6 Concurrency
 
 Supports Swift 6 concurrency checking. Designed with `defaultIsolation(MainActor.self)` in mind.
 
diff --git a/README_jp.md b/README_jp.md
index 2cc7f80..59f871a 100644
--- a/README_jp.md
+++ b/README_jp.md
@@ -4,7 +4,7 @@
 [![Platforms](https://img.shields.io/badge/Platforms-iOS%20|%20macOS%20|%20watchOS%20|%20tvOS-blue.svg)](https://github.com/ViewFeature/Flow)
 [![License](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)
 
-SwiftUI向けの型安全な状態管理ライブラリです。単方向データフローアーキテクチャを採用し、ObservationとSwift 6のApproachable Concurrencyに対応しています。
+SwiftUI向けの型安全な状態管理ライブラリです。単方向データフローアーキテクチャを採用し、ObservationとSwift 6 Concurrencyに対応しています。
 
 <p align="center">
     <img src="flow-diagram.svg" alt="Flow Architecture Diagram" />
@@ -179,7 +179,7 @@ final class State {
 - コード量が削減される
 - SwiftUIの標準APIとの統合
 
-### Approachable Concurrency
+### Swift 6 Concurrency
 
 Swift 6の並行性チェックに対応しています。`defaultIsolation(MainActor.self)`を前提とした設計です。
 
diff --git a/Sources/Flow/Flow.docc/CoreConcepts.md b/Sources/Flow/Flow.docc/CoreConcepts.md
index feef3ce..33580f1 100644
--- a/Sources/Flow/Flow.docc/CoreConcepts.md
+++ b/Sources/Flow/Flow.docc/CoreConcepts.md
@@ -158,9 +158,9 @@ final class State {
 - Reduced code
 - Integrates with SwiftUI's standard APIs
 
-### Approachable Concurrency
+### Swift 6 Concurrency
 
-Supports **Approachable Concurrency**.
+Supports **Swift 6 Concurrency**.
 
 A Swift 6 feature that allows setting default actor isolation for an entire module. Flow assumes `defaultIsolation(MainActor.self)`, eliminating the need for explicit `@MainActor` annotations.
 
diff --git a/Sources/Flow/Flow.docc/Flow.md b/Sources/Flow/Flow.docc/Flow.md
index f96ca64..925a66f 100644
--- a/Sources/Flow/Flow.docc/Flow.md
+++ b/Sources/Flow/Flow.docc/Flow.md
@@ -1,6 +1,6 @@
 # ``Flow``
 
-A library for managing state in SwiftUI applications in a type-safe way. Flow provides a unidirectional data flow architecture and supports Observation and Swift 6 Approachable Concurrency.
+A library for managing state in SwiftUI applications in a type-safe way. Flow provides a unidirectional data flow architecture and supports Observation and Swift 6 Concurrency.
 
 ## Overview
 
@@ -63,7 +63,7 @@ Actions flow through the handler, update state, and SwiftUI re-renders automatic
 
 - **No global store** - Each view holds its own state with `@State`
 - **Result-returning actions** - Views receive action processing results
-- **Swift 6 support** - Thread-safe by default with Approachable Concurrency
+- **Swift 6 support** - Thread-safe by default with Swift 6 Concurrency
 - **@Observable support** - Uses SwiftUI's standard `@Observable` with no Combine dependency
 - **Flexible middleware** - Add cross-cutting concerns like logging, analytics, and debugging