diff --git a/README_JA.md b/README_JA.md
index 542ce3e..2ed5034 100644
--- a/README_JA.md
+++ b/README_JA.md
@@ -89,7 +89,7 @@ Phase 6: 検証とテスト
 
 #### プラグインのインストール
 ```shell
-/plugin install harness-marketplace
+/plugin install harness@harness-marketplace
 ```
 
 ### グローバルスキルとして直接インストール
diff --git a/README_KO.md b/README_KO.md
index 891994d..42b4b28 100644
--- a/README_KO.md
+++ b/README_KO.md
@@ -89,7 +89,7 @@ Phase 6: 검증 및 테스트
 
 #### 플러그인 설치
 ```shell
-/plugin install harness-marketplace
+/plugin install harness@harness-marketplace
 ```
 
 ### 글로벌 스킬로 직접 설치
diff --git a/docs/quickstart.md b/docs/quickstart.md
index 89fe9c1..3a429ed 100644
--- a/docs/quickstart.md
+++ b/docs/quickstart.md
@@ -28,7 +28,7 @@ claude plugin marketplace add revfactory/harness
 ## Step 2 — Install the plugin and enable the Experimental flag (40 seconds)
 
 ```bash
-claude plugin install harness@harness
+claude plugin install harness@harness-marketplace
 export CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1
 ```
 
@@ -76,7 +76,7 @@ ls -la .claude/skills/
 
 **Failure FAQ #3 — "Nothing was generated" / directories are empty**
 **Cause:** The plugin is not actually installed or is not active in the current project.
-**Fix:** Run `claude plugin list`. If `harness@harness` is absent, repeat Step 2. If present but inactive, run `claude plugin enable harness@harness`, then repeat Step 3.
+**Fix:** Run `claude plugin list`. If `harness@harness-marketplace` is absent, repeat Step 2. If present but inactive, run `claude plugin enable harness@harness-marketplace`, then repeat Step 3.
 
 ---