diff --git a/build.gradle b/build.gradle
index f20c6e7..9877449 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ plugins {
 }
 
 group 'cc.sukazyo'
-version '0.3.4.2'
+version '0.3.4.3'
 project.ext.archiveBaseName = 'Coeur_Morny_Cono'
 project.ext.artifactId = 'morny-coeur'
 mainClassName = 'cc.sukazyo.cono.morny.MornyCoeur'
@@ -31,6 +31,9 @@ task updateVersionCode {
 	ant.replaceregexp(match:'VERSION = ["a-zA-Z0-9.\\-_+@]+;', replace:"VERSION = \"$project.version\";", flags:'g', byline:true) {
 		fileset(dir: 'src/main/java/cc/sukazyo/cono/morny', includes: 'GradleProjectConfigures.java')
 	}
+	ant.replaceregexp(match:'COMPILE_TIMESTAMP = [0-9]+L;', replace:"COMPILE_TIMESTAMP = ${System.currentTimeMillis()}L;", flags:'g', byline:true) {
+		fileset(dir: 'src/main/java/cc/sukazyo/cono/morny', includes: 'GradleProjectConfigures.java')
+	}
 }
 
 compileJava.dependsOn updateVersionCode
diff --git a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
index 4ab2324..85f85a5 100644
--- a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
+++ b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
@@ -4,5 +4,6 @@ package cc.sukazyo.cono.morny;
  * the final field that will be updated by gradle automatically.
  */
 public class GradleProjectConfigures {
-	public static final String VERSION = "0.3.4.2";
+	public static final String VERSION = "0.3.4.3";
+	public static final long COMPILE_TIMESTAMP = 1638871718439L;
 }
diff --git a/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java b/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java
index 72943f6..ff5ed18 100644
--- a/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java
+++ b/src/main/java/cc/sukazyo/cono/morny/MornyCoeur.java
@@ -8,6 +8,12 @@ import com.pengrad.telegrambot.request.GetMe;
 
 import javax.annotation.Nonnull;
 
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+
 import static cc.sukazyo.cono.morny.Logger.logger;
 
 /**
@@ -45,9 +51,19 @@ public class MornyCoeur {
 		if ("--version".equals(args[0])) {
 			logger.info(String.format("""
 					Morny Cono Version
-					- version : %s
-					- md5hash : %s
-					""", MornySystem.VERSION, MornySystem.getJarMd5()
+					- version :
+					    %s
+					- md5hash :
+					    %s
+					- co.time :
+					    %d
+					    %s [UTC]""",
+					MornySystem.VERSION,
+					MornySystem.getJarMd5(),
+					GradleProjectConfigures.COMPILE_TIMESTAMP,
+					DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss:SSS").format(LocalDateTime.ofInstant(
+							Instant.ofEpochMilli(GradleProjectConfigures.COMPILE_TIMESTAMP),
+							ZoneId.ofOffset("UTC", ZoneOffset.UTC)))
 			));
 			return;
 		}
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 cc7ee14..a80293c 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
@@ -1,5 +1,6 @@
 package cc.sukazyo.cono.morny.bot.event;
 
+import cc.sukazyo.cono.morny.GradleProjectConfigures;
 import cc.sukazyo.cono.morny.MornyCoeur;
 import cc.sukazyo.cono.morny.MornySystem;
 import cc.sukazyo.cono.morny.MornyTrusted;
@@ -13,6 +14,12 @@ import com.pengrad.telegrambot.request.SendSticker;
 
 import javax.annotation.Nonnull;
 
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+import java.time.ZoneOffset;
+import java.time.format.DateTimeFormatter;
+
 import static cc.sukazyo.cono.morny.Logger.logger;
 
 public class OnCommandExecute extends EventListener {
@@ -96,13 +103,20 @@ public class OnCommandExecute extends EventListener {
 	private void onCommandVersionExec (@Nonnull 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>",
+				String.format("""
+						version:
+						<code>  </code><code>%s</code>
+						core md5_hash:
+						<code>  </code><code>%s</code>
+						compile timestamp:
+						<code>  </code><code>%d</code>
+						<code>  </code><code>%s [UTC]</code>""",
 						MornySystem.VERSION,
-						MornySystem.getJarMd5()
+						MornySystem.getJarMd5(),
+						GradleProjectConfigures.COMPILE_TIMESTAMP,
+						DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss:SSS").format(LocalDateTime.ofInstant(
+								Instant.ofEpochMilli(GradleProjectConfigures.COMPILE_TIMESTAMP),
+								ZoneId.ofOffset("UTC", ZoneOffset.UTC)))
 				)
 		).replyToMessageId(event.message().messageId()).parseMode(ParseMode.HTML));
 	}