diff --git a/README.md b/README.md
index a194e5b..2a2877f 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ The examples of declaring that repository and the dependency on this package in
     <dependency>
       <groupId>io.github.sttk</groupId>
       <artifactId>sabi</artifactId>
-      <version>0.4.0</version>
+      <version>0.5.0</version>
     </dependency>
   </dependencies>
 ```
@@ -43,7 +43,7 @@ repositories {
   mavenCentral()
 }
 dependencies {
-  implementation 'io.github.sttk:sabi:0.4.0'
+  implementation 'io.github.sttk:sabi:0.5.0'
 }
 ```
 
@@ -215,8 +215,8 @@ See the file LICENSE in this distribution for more details.
 
 
 [repo-url]: https://github.com/sttk/sabi-java
-[mvn-img]: https://img.shields.io/badge/maven_central-0.4.0-276bdd.svg
-[mvn-url]: https://mvnrepository.com/artifact/io.github.sttk/sabi/0.4.0
+[mvn-img]: https://img.shields.io/badge/maven_central-0.5.0-276bdd.svg
+[mvn-url]: https://mvnrepository.com/artifact/io.github.sttk/sabi/0.5.0
 [io-img]: https://img.shields.io/badge/github.io-Javadoc-4d7a97.svg
 [io-url]: https://sttk.github.io/sabi-java/
 [ci-img]: https://github.com/sttk/sabi-java/actions/workflows/java-ci.yml/badge.svg?branch=main
diff --git a/pom.xml b/pom.xml
index 029ed01..c10f6db 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
   <groupId>io.github.sttk</groupId>
   <artifactId>sabi</artifactId>
-  <version>0.4.0</version>
+  <version>0.5.0</version>
   <packaging>jar</packaging>
 
   <name>sabi</name>
diff --git a/src/main/java/com/github/sttk/sabi/AsyncGroup.java b/src/main/java/com/github/sttk/sabi/AsyncGroup.java
index 490a0cb..82ffbe3 100644
--- a/src/main/java/com/github/sttk/sabi/AsyncGroup.java
+++ b/src/main/java/com/github/sttk/sabi/AsyncGroup.java
@@ -1,5 +1,5 @@
 /*
- * AsyncGroup class.
+ * AsyncGroup.java
  * Copyright (C) 2023-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/DataAcc.java b/src/main/java/com/github/sttk/sabi/DataAcc.java
index 64294e3..e8b1372 100644
--- a/src/main/java/com/github/sttk/sabi/DataAcc.java
+++ b/src/main/java/com/github/sttk/sabi/DataAcc.java
@@ -1,5 +1,5 @@
 /*
- * DataAcc class.
+ * DataAcc.java
  * Copyright (C) 2023-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/DataConn.java b/src/main/java/com/github/sttk/sabi/DataConn.java
index 55fdbd0..1b2ed07 100644
--- a/src/main/java/com/github/sttk/sabi/DataConn.java
+++ b/src/main/java/com/github/sttk/sabi/DataConn.java
@@ -1,5 +1,5 @@
 /*
- * DataConn class.
+ * DataConn.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/DataHub.java b/src/main/java/com/github/sttk/sabi/DataHub.java
index 24684ce..e9a2ee8 100644
--- a/src/main/java/com/github/sttk/sabi/DataHub.java
+++ b/src/main/java/com/github/sttk/sabi/DataHub.java
@@ -1,5 +1,5 @@
 /*
- * DataHub class.
+ * DataHub.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/DataSrc.java b/src/main/java/com/github/sttk/sabi/DataSrc.java
index 760a9c9..1237c5a 100644
--- a/src/main/java/com/github/sttk/sabi/DataSrc.java
+++ b/src/main/java/com/github/sttk/sabi/DataSrc.java
@@ -1,5 +1,5 @@
 /*
- * DataSrc class.
+ * DataSrc.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/Logic.java b/src/main/java/com/github/sttk/sabi/Logic.java
index faf94d9..53b449b 100644
--- a/src/main/java/com/github/sttk/sabi/Logic.java
+++ b/src/main/java/com/github/sttk/sabi/Logic.java
@@ -1,5 +1,5 @@
 /*
- * Logic class.
+ * Logic.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/Runner.java b/src/main/java/com/github/sttk/sabi/Runner.java
index 0c9b5eb..760ac7f 100644
--- a/src/main/java/com/github/sttk/sabi/Runner.java
+++ b/src/main/java/com/github/sttk/sabi/Runner.java
@@ -1,5 +1,5 @@
 /*
- * Runner class.
+ * Runner.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/Sabi.java b/src/main/java/com/github/sttk/sabi/Sabi.java
index da31f04..6a4c2fc 100644
--- a/src/main/java/com/github/sttk/sabi/Sabi.java
+++ b/src/main/java/com/github/sttk/sabi/Sabi.java
@@ -1,5 +1,5 @@
 /*
- * Sabi class.
+ * Sabi.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi;
diff --git a/src/main/java/com/github/sttk/sabi/internal/AsyncGroupImpl.java b/src/main/java/com/github/sttk/sabi/internal/AsyncGroupImpl.java
index 401acf6..5f34e8e 100644
--- a/src/main/java/com/github/sttk/sabi/internal/AsyncGroupImpl.java
+++ b/src/main/java/com/github/sttk/sabi/internal/AsyncGroupImpl.java
@@ -1,5 +1,5 @@
 /*
- * AsyncGroup class.
+ * AsyncGroupImpl.java
  * Copyright (C) 2023-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi.internal;
diff --git a/src/main/java/com/github/sttk/sabi/internal/DataConnContainer.java b/src/main/java/com/github/sttk/sabi/internal/DataConnContainer.java
index 6513424..f531748 100644
--- a/src/main/java/com/github/sttk/sabi/internal/DataConnContainer.java
+++ b/src/main/java/com/github/sttk/sabi/internal/DataConnContainer.java
@@ -1,5 +1,5 @@
 /*
- * DataConnContainer class.
+ * DataConnContainer.java
  * Copyright (C) 2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi.internal;
diff --git a/src/main/java/com/github/sttk/sabi/internal/DataConnList.java b/src/main/java/com/github/sttk/sabi/internal/DataConnList.java
index 112b51c..8496d76 100644
--- a/src/main/java/com/github/sttk/sabi/internal/DataConnList.java
+++ b/src/main/java/com/github/sttk/sabi/internal/DataConnList.java
@@ -1,5 +1,5 @@
 /*
- * DataConnList class.
+ * DataConnList.java
  * Copyright (C) 2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi.internal;
diff --git a/src/main/java/com/github/sttk/sabi/internal/DataHubInner.java b/src/main/java/com/github/sttk/sabi/internal/DataHubInner.java
index 720eacb..e29f1f3 100644
--- a/src/main/java/com/github/sttk/sabi/internal/DataHubInner.java
+++ b/src/main/java/com/github/sttk/sabi/internal/DataHubInner.java
@@ -1,5 +1,5 @@
 /*
- * DataHubInner class.
+ * DataHubInner.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi.internal;
diff --git a/src/main/java/com/github/sttk/sabi/internal/DataSrcContainer.java b/src/main/java/com/github/sttk/sabi/internal/DataSrcContainer.java
index 0c07343..6c1a53e 100644
--- a/src/main/java/com/github/sttk/sabi/internal/DataSrcContainer.java
+++ b/src/main/java/com/github/sttk/sabi/internal/DataSrcContainer.java
@@ -1,5 +1,5 @@
 /*
- * DataSrcContainer class.
+ * DataSrcContainer.java
  * Copyright (C) 2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi.internal;
diff --git a/src/main/java/com/github/sttk/sabi/internal/DataSrcList.java b/src/main/java/com/github/sttk/sabi/internal/DataSrcList.java
index 4f8bcd9..297f505 100644
--- a/src/main/java/com/github/sttk/sabi/internal/DataSrcList.java
+++ b/src/main/java/com/github/sttk/sabi/internal/DataSrcList.java
@@ -1,5 +1,5 @@
 /*
- * DataSrcContainer class.
+ * DataSrcContainer.java
  * Copyright (C) 2025 Takayuki Sato. All Rights Reserved.
  */
 package com.github.sttk.sabi.internal;
diff --git a/src/main/java/com/github/sttk/sabi/package-info.java b/src/main/java/com/github/sttk/sabi/package-info.java
new file mode 100644
index 0000000..209a7a5
--- /dev/null
+++ b/src/main/java/com/github/sttk/sabi/package-info.java
@@ -0,0 +1,11 @@
+/*
+ * package-info.java
+ * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
+ */
+
+/**
+ * Provides classes and interfaces of sabi framework.
+ *
+ * @version 0.5
+ */
+package com.github.sttk.sabi;
diff --git a/src/main/java/module-info.java b/src/main/java/module-info.java
index a3cefba..feb8cde 100644
--- a/src/main/java/module-info.java
+++ b/src/main/java/module-info.java
@@ -1,5 +1,5 @@
 /*
- * module-info.
+ * module-info.java
  * Copyright (C) 2022-2025 Takayuki Sato. All Rights Reserved.
  */
 
@@ -8,6 +8,8 @@
  *
  * <p>This module includes the interfaces that abstracts data accesses to the external data stores
  * and the classes to execute a logic function with or without transaction operations.
+ *
+ * @version 0.5
  */
 module com.github.sttk.sabi {
   exports com.github.sttk.sabi;