diff --git a/build.gradle b/build.gradle
index 140c3c5..fb0257b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,18 +1,15 @@
-buildscript {
-	repositories {
-		mavenCentral()
-	}
-	dependencies {
-		classpath 'com.github.jengelman.gradle.plugins:shadow:5.0.0'
-	}
-}
-
 plugins {
 	id 'java'
+	id 'maven-publish'
+	id 'application'
+	id 'com.github.johnrengelman.shadow' version '7.1.0'
 }
 
 group 'cc.sukazyo'
-version '0.2.0'
+version '0.3.0'
+project.ext.archiveBaseName = 'Coeur_Morny_Cono'
+project.ext.artifactId = 'morny-coeur'
+mainClassName = 'cc.sukazyo.cono.morny.MornyCoeur'
 
 repositories {
 	mavenCentral()
@@ -31,6 +28,10 @@ test {
 	useJUnitPlatform()
 }
 
+java {
+	withSourcesJar()
+}
+
 tasks.withType(JavaCompile) {
 	options.encoding = "UTF-8"
 }
@@ -49,7 +50,38 @@ apply plugin: 'com.github.johnrengelman.shadow'
 apply plugin: 'application'
 
 shadowJar {
-	mainClassName = 'cc.sukazyo.cono.morny.MornyCoeur'
-	archiveBaseName.set("Morny_Coeur")
-	archiveVersion.set(version)
+	archiveBaseName.set("${project.ext.archiveBaseName}")
+	archiveVersion.set("${project.version}")
+	archiveClassifier.set("fat")
+}
+
+shadowJar {
+	archiveBaseName.set("${project.ext.archiveBaseName}")
+	archiveVersion.set("${project.version}")
+	archiveClassifier.set("fat")
+}
+
+publishing {
+	repositories{
+		maven {
+			name 'builds'
+			url = "file://" + new File("./build/publishing").getAbsolutePath()
+		}
+		maven {
+			name '-ws-'
+			url publishMvnRepoUrl
+			credentials {
+				username publishMvnRepoUsername
+				password publishMvnRepoPassword
+			}
+		}
+	}
+	publications {
+		main (MavenPublication) {
+			from components.java
+			groupId = project.group
+			artifactId = project.ext.artifactId
+			version = project.version
+		}
+	}
 }
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 69a9715..e750102 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java b/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java
index 03ca922..e6fd6cd 100644
--- a/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java
+++ b/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java
@@ -52,7 +52,7 @@ public class MornyCoeur {
 			try {
 				String username = account.execute(new GetMe()).user().username();
 				if (!USERNAME.equals(username))
-					throw new RuntimeException("Required the bot @"+USERNAME + " but @"+username + "logged in!");
+					throw new RuntimeException("Required the bot @"+USERNAME + " but @"+username + " logged in!");
 				logger.info("Succeed login to @" + username);
 				return account;
 			} catch (Exception e) {
diff --git a/src/main/java/cc/sukazyo/cono/morny/MornySystem.java b/src/main/java/cc/sukazyo/cono/morny/MornySystem.java
new file mode 100644
index 0000000..bedb6b3
--- /dev/null
+++ b/src/main/java/cc/sukazyo/cono/morny/MornySystem.java
@@ -0,0 +1,20 @@
+package cc.sukazyo.cono.morny;
+
+import cc.sukazyo.cono.morny.util.FileUtils;
+
+import java.net.URISyntaxException;
+
+public class MornySystem {
+	
+	public static final String VERSION = "0.3.0";
+	
+	public static String getJarMd5() {
+		try {
+			return FileUtils.getMD5Three(MornyCoeur.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath());
+		} catch (URISyntaxException e) {
+			e.printStackTrace(System.out);
+			return e.getMessage();
+		}
+	}
+	
+}
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/event/OnCommandExecute.java b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnCommandExecute.java
index a6653d2..67af138 100644
--- a/src/main/java/cc/sukazyo/cono/morny/bot/event/OnCommandExecute.java
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnCommandExecute.java
@@ -1,9 +1,12 @@
 package cc.sukazyo.cono.morny.bot.event;
 
 import cc.sukazyo.cono.morny.MornyCoeur;
+import cc.sukazyo.cono.morny.MornySystem;
 import cc.sukazyo.cono.morny.MornyTrusted;
 import cc.sukazyo.cono.morny.bot.api.EventListener;
 import com.pengrad.telegrambot.model.Update;
+import com.pengrad.telegrambot.model.request.ParseMode;
+import com.pengrad.telegrambot.request.SendMessage;
 import com.pengrad.telegrambot.request.SendSticker;
 
 import static cc.sukazyo.cono.morny.Logger.logger;
@@ -35,6 +38,10 @@ public class OnCommandExecute extends EventListener {
 			case "/exit@" + MornyCoeur.USERNAME:
 				onCommandExitExec(event);
 				break;
+			case "/version":
+			case "/version@" + MornyCoeur.USERNAME:
+				onCommandVersionExec(event);
+				break;
 			default:
 				return false;
 		}
@@ -76,4 +83,18 @@ public class OnCommandExecute extends EventListener {
 		}
 	}
 	
+	private void onCommandVersionExec (Update event) {
+		MornyCoeur.getAccount().execute(new SendMessage(
+				event.message().chat().id(),
+				String.format(
+						"version:\n" +
+						"\t<code>%s</code>\n" +
+						"core md5_hash:\n" +
+						"\t<code>%s</code>",
+						MornySystem.VERSION,
+						MornySystem.getJarMd5()
+				)
+		).parseMode(ParseMode.HTML));
+	}
+	
 }
diff --git a/src/main/java/cc/sukazyo/cono/morny/util/FileUtils.java b/src/main/java/cc/sukazyo/cono/morny/util/FileUtils.java
new file mode 100644
index 0000000..73b17eb
--- /dev/null
+++ b/src/main/java/cc/sukazyo/cono/morny/util/FileUtils.java
@@ -0,0 +1,33 @@
+package cc.sukazyo.cono.morny.util;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class FileUtils {
+	
+	public static String getMD5Three (String path) {
+		BigInteger bi;
+		try {
+			byte[] buffer = new byte[8192];
+			int len;
+			MessageDigest md = MessageDigest.getInstance("MD5");
+			File f = new File(path);
+			FileInputStream fis = new FileInputStream(f);
+			while ((len = fis.read(buffer)) != -1) {
+				md.update(buffer, 0, len);
+			}
+			fis.close();
+			byte[] b = md.digest();
+			bi = new BigInteger(1, b);
+		} catch (NoSuchAlgorithmException | IOException e) {
+			e.printStackTrace(System.out);
+			return e.getMessage();
+		}
+		return bi.toString(16);
+	}
+	
+}