diff --git a/README.md b/README.md
index 9b3cab6..14c26aa 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ gradle runFakeSmoke
 
 ## 소스 코드 커스터마이즈
 
-`src/main/java/com/eactive/apim/custom/djb/damomanager/DamoManager.java` 상단 상수 영역을 수정한다.
+`src/main/java/com/eactive/ext/djb/DamoManager.java` 상단 상수 영역을 수정한다.
 
 | 상수 | 의미 | 기본값 |
 |---|---|---|
@@ -66,7 +66,7 @@ WAS lib 폴더에서 클래스를 로드하므로 의존성 scope 는 반드시
 
 ```xml
 <dependency>
-    <groupId>com.eactive.apim.custom.djb</groupId>
+    <groupId>com.eactive.ext.djb</groupId>
     <artifactId>damo-manager</artifactId>
     <version>1.0.0</version>
     <scope>system</scope>
@@ -115,7 +115,7 @@ WAS 기동 시 콘솔(`catalina.out` 또는 stderr)에 다음과 같은 배너
 ## 주요 메서드
 
 ```java
-import com.eactive.apim.custom.djb.damomanager.DamoManager;
+import com.eactive.ext.djb.DamoManager;
 
 DamoManager damo = new DamoManager();    // 클래스 로딩 시점에 모드 감지
 
@@ -153,7 +153,7 @@ int     rc    = damo.getReturnCode();                        // 0: 성공, -1: 
 스모크 main 이 포함되어 있다.
 
 ```bash
-java -cp build/libs/damo-manager.jar com.eactive.apim.custom.djb.damomanager.DamoManager
+java -cp build/libs/damo-manager.jar com.eactive.ext.djb.DamoManager
 ```
 
 또는:
diff --git a/build.gradle b/build.gradle
index f279532..881e657 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,7 @@ plugins {
     id 'java-library'
 }
 
-group   = 'com.eactive.apim.custom.djb'
+group   = 'com.eactive.ext.djb'
 version = '1.0.0'
 
 java {
@@ -45,6 +45,6 @@ tasks.register('runFakeSmoke', JavaExec) {
     group = 'verification'
     description = 'Run DamoManager main() with no scpdb on classpath (fake mode smoke test)'
     classpath = sourceSets.main.runtimeClasspath
-    mainClass = 'com.eactive.apim.custom.djb.damomanager.DamoManager'
+    mainClass = 'com.eactive.ext.djb.DamoManager'
     dependsOn 'classes'
 }
diff --git a/src/main/java/com/eactive/apim/custom/djb/damomanager/DamoManager.java b/src/main/java/com/eactive/ext/djb/DamoManager.java
similarity index 99%
rename from src/main/java/com/eactive/apim/custom/djb/damomanager/DamoManager.java
rename to src/main/java/com/eactive/ext/djb/DamoManager.java
index e28a794..5696976 100644
--- a/src/main/java/com/eactive/apim/custom/djb/damomanager/DamoManager.java
+++ b/src/main/java/com/eactive/ext/djb/DamoManager.java
@@ -1,4 +1,4 @@
-package com.eactive.apim.custom.djb.damomanager;
+package com.eactive.ext.djb;
 
 import java.io.ByteArrayOutputStream;
 import java.io.UnsupportedEncodingException;