diff --git a/gradle.properties b/gradle.properties
index fb078c2..6094b3a 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 ## Core
 
-VERSION = 0.6.3.3
+VERSION = 0.6.4.0
 
 # dependencies
 
diff --git a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
index deefd90..31e41f9 100644
--- a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
+++ b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
@@ -4,6 +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 = "0.6.3.3";
-	public static final long COMPILE_TIMESTAMP = 1652195187089L;
+	public static final String VERSION = "0.6.4.0";
+	public static final long COMPILE_TIMESTAMP = 1652197330102L;
 }
diff --git a/src/main/java/cc/sukazyo/cono/morny/ServerMain.java b/src/main/java/cc/sukazyo/cono/morny/ServerMain.java
index 88a269c..f809434 100644
--- a/src/main/java/cc/sukazyo/cono/morny/ServerMain.java
+++ b/src/main/java/cc/sukazyo/cono/morny/ServerMain.java
@@ -125,6 +125,7 @@ public class ServerMain {
 						continue;
 					}
 					case "--trusted-reader-dinner" -> {
+						i++;
 						trustedReadersOfDinner.add(Long.parseLong(args[i]));
 						continue;
 					}