diff --git a/build.gradle.kts b/build.gradle.kts
index a699cc4..1c5909b 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -9,7 +9,7 @@ plugins {
 }
 
 group = "net.azisaba"
-version = "6.8.2"
+version = "6.8.3"
 
 java {
     toolchain.languageVersion.set(JavaLanguageVersion.of(8))
diff --git a/src/main/java/com/github/mori01231/lifecore/listener/PlayerJoinListener.java b/src/main/java/com/github/mori01231/lifecore/listener/PlayerJoinListener.java
index 01ac144..fa0cdc8 100644
--- a/src/main/java/com/github/mori01231/lifecore/listener/PlayerJoinListener.java
+++ b/src/main/java/com/github/mori01231/lifecore/listener/PlayerJoinListener.java
@@ -9,6 +9,7 @@
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.AsyncPlayerPreLoginEvent;
 import org.bukkit.event.player.PlayerJoinEvent;
+import org.bukkit.event.player.PlayerLoginEvent;
 
 public class PlayerJoinListener implements Listener {
     private final LifeCore plugin;
@@ -36,4 +37,14 @@ public void onPlayerJoin(PlayerJoinEvent e) {
         PlayerUtil.getChannel(e.getPlayer()).pipeline()
                 .addBefore("packet_handler", "lifecore", new PacketHandler(e.getPlayer()));
     }
+
+    @EventHandler
+    public void onPlayerLogin(PlayerLoginEvent e) {
+        if (!Bukkit.getPluginManager().isPluginEnabled("Towny")) {
+            return;
+        }
+        if (e.getPlayer().getName().toLowerCase().startsWith("town_") || e.getPlayer().getName().toLowerCase().startsWith("nation_")) {
+            e.disallow(PlayerLoginEvent.Result.KICK_OTHER, "Towny is preventing you from logging in using this account name.");
+        }
+    }
 }