diff --git a/common/src/main/java/kr/tkrmagid/chatanswer/core/ChatAnswerCore.java b/common/src/main/java/kr/tkrmagid/chatanswer/core/ChatAnswerCore.java
index 0c1b4f4..5f052c8 100644
--- a/common/src/main/java/kr/tkrmagid/chatanswer/core/ChatAnswerCore.java
+++ b/common/src/main/java/kr/tkrmagid/chatanswer/core/ChatAnswerCore.java
@@ -31,6 +31,26 @@ public final class ChatAnswerCore {
 
     private ChatAnswerCore() {}
 
+    /**
+     * 플레이어 로그인 직후 호출. 데이터팩이 "모드 살아있음" 신호로 쓸 수 있게
+     * storage chat_answer:status 에 active=1b 를 세팅한다. 데이터팩의 mq:load 가
+     * 매 /reload 와 서버 시작 시 이 값을 0b 로 clear 하므로, 모드가 없으면 이
+     * 호출이 일어나지 않아 0b 로 유지되고, 모드가 있으면 첫 로그인 직후 1b 로 갱신.
+     */
+    public static void onPlayerJoin(ServerPlayer player) {
+        MinecraftServer server = player.getServer();
+        if (server == null) return;
+        CommandSourceStack source = server.createCommandSourceStack().withSuppressedOutput();
+        try {
+            server.getCommands().performPrefixedCommand(
+                source,
+                "data modify storage chat_answer:status active set value 1b"
+            );
+        } catch (Exception e) {
+            LOG.debug("[{}] failed to set active flag: {}", MOD_ID, e.toString());
+        }
+    }
+
     /**
      * @return true = 채팅을 평소처럼 broadcast / false = 채팅 차단 (이미 정답 제출 처리됨)
      */
diff --git a/fabric/src/main/java/kr/tkrmagid/chatanswer/fabric/ChatAnswerFabric.java b/fabric/src/main/java/kr/tkrmagid/chatanswer/fabric/ChatAnswerFabric.java
index ae3a849..587f5b4 100644
--- a/fabric/src/main/java/kr/tkrmagid/chatanswer/fabric/ChatAnswerFabric.java
+++ b/fabric/src/main/java/kr/tkrmagid/chatanswer/fabric/ChatAnswerFabric.java
@@ -3,6 +3,7 @@ package kr.tkrmagid.chatanswer.fabric;
 import kr.tkrmagid.chatanswer.core.ChatAnswerCore;
 import net.fabricmc.api.ModInitializer;
 import net.fabricmc.fabric.api.message.v1.ServerMessageEvents;
+import net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents;
 
 public final class ChatAnswerFabric implements ModInitializer {
     @Override
@@ -10,5 +11,8 @@ public final class ChatAnswerFabric implements ModInitializer {
         ServerMessageEvents.ALLOW_CHAT_MESSAGE.register((message, sender, params) ->
             ChatAnswerCore.handleChat(sender, message.signedContent())
         );
+        ServerPlayConnectionEvents.JOIN.register((handler, sender, server) ->
+            ChatAnswerCore.onPlayerJoin(handler.player)
+        );
     }
 }
diff --git a/gradle.properties b/gradle.properties
index f48aeaa..eb03f1f 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -15,6 +15,6 @@ neoforge_version=21.6.20-beta
 
 # ───── mod metadata ─────────────────────────────────────────────────────────
 mod_id=chat_answer
-mod_version=1.0.0
+mod_version=1.1.0
 mod_group=kr.tkrmagid.chatanswer
 mod_name=채팅정답
diff --git a/neoforge/src/main/java/kr/tkrmagid/chatanswer/neoforge/ChatAnswerNeoForge.java b/neoforge/src/main/java/kr/tkrmagid/chatanswer/neoforge/ChatAnswerNeoForge.java
index 00a1902..b5cf676 100644
--- a/neoforge/src/main/java/kr/tkrmagid/chatanswer/neoforge/ChatAnswerNeoForge.java
+++ b/neoforge/src/main/java/kr/tkrmagid/chatanswer/neoforge/ChatAnswerNeoForge.java
@@ -1,16 +1,19 @@
 package kr.tkrmagid.chatanswer.neoforge;
 
 import kr.tkrmagid.chatanswer.core.ChatAnswerCore;
+import net.minecraft.server.level.ServerPlayer;
 import net.neoforged.bus.api.IEventBus;
 import net.neoforged.bus.api.SubscribeEvent;
 import net.neoforged.fml.common.Mod;
 import net.neoforged.neoforge.common.NeoForge;
 import net.neoforged.neoforge.event.ServerChatEvent;
+import net.neoforged.neoforge.event.entity.player.PlayerEvent;
 
 @Mod(ChatAnswerCore.MOD_ID)
 public final class ChatAnswerNeoForge {
     public ChatAnswerNeoForge(IEventBus modBus) {
         NeoForge.EVENT_BUS.addListener(ChatAnswerNeoForge::onServerChat);
+        NeoForge.EVENT_BUS.addListener(ChatAnswerNeoForge::onPlayerLogin);
     }
 
     @SubscribeEvent
@@ -20,4 +23,11 @@ public final class ChatAnswerNeoForge {
             event.setCanceled(true);
         }
     }
+
+    @SubscribeEvent
+    public static void onPlayerLogin(PlayerEvent.PlayerLoggedInEvent event) {
+        if (event.getEntity() instanceof ServerPlayer player) {
+            ChatAnswerCore.onPlayerJoin(player);
+        }
+    }
 }