diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..d5541f9
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,7 @@
+2024-07-01 [version 0.0.1-SNAPSHOT]
+## 🐣 New Features
+* arcus-test-container 0.0.1-SNAPSHOT is opened. (Apache License 2.0)
+* Add ArcusContainer for single node cache server.
+* Add ArcusClusterContainer for cluster cache servers.
+## ✅ Testing
+* Add unit test for ArcusContainer and ArcusClusterContainer.
diff --git a/README.md b/README.md
index c663614..bca394b 100644
--- a/README.md
+++ b/README.md
@@ -10,16 +10,16 @@ ___
 ### Gradle
 ```groovy
 dependencies {
-    testImplementation "com.jam2in:arcus-test-container:1.0.0-SNAPSHOT"
+    testImplementation "com.jam2in.arcus:arcus-test-container:0.0.1-SNAPSHOT"
 }
 ```
 
 ### Maven
 ```xml
 <dependency>
-    <groupId>com.jam2in</groupId>
+    <groupId>com.jam2in.arcus</groupId>
     <artifactId>arcus-test-container</artifactId>
-    <version>1.0.0-SNAPSHOT</version>
+    <version>0.0.1-SNAPSHOT</version>
     <scope>test</scope>
 </dependency>
 ```
diff --git a/pom.xml b/pom.xml
index 3bde97f..26a467b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,9 +4,9 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
-    <groupId>com.jam2in</groupId>
+    <groupId>com.jam2in.arcus</groupId>
     <artifactId>arcus-test-container</artifactId>
-    <version>1.0-SNAPSHOT</version>
+    <version>0.0.1-SNAPSHOT</version>
 
     <properties>
         <maven.compiler.source>8</maven.compiler.source>