diff --git a/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt b/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt
index 334a10f..8cd8431 100644
--- a/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt
+++ b/common/src/main/kotlin/space/mori/chzzk_bot/common/models/User.kt
@@ -10,7 +10,7 @@ object Users: IntIdTable("users") {
     val username = varchar("username", 255)
     val token = varchar("token", 64)
     val discord = long("discord")
-    val naverId = long("naver_id")
+    val naverId = varchar('naver_id', 128)
     val liveAlertGuild = long("live_alert_guild").nullable()
     val liveAlertChannel = long("live_alert_channel").nullable()
     val liveAlertMessage = text("live_alert_message").nullable()
diff --git a/common/src/main/kotlin/space/mori/chzzk_bot/common/services/UserService.kt b/common/src/main/kotlin/space/mori/chzzk_bot/common/services/UserService.kt
index 3863851..4b430a8 100644
--- a/common/src/main/kotlin/space/mori/chzzk_bot/common/services/UserService.kt
+++ b/common/src/main/kotlin/space/mori/chzzk_bot/common/services/UserService.kt
@@ -47,7 +47,7 @@ object UserService {
         }
     }
 
-    fun getUserWithNaverId(naverId: Long): User? {
+    fun getUserWithNaverId(naverId: String): User? {
         return transaction {
             val users = User.find(Users.naverId eq naverId)
 
diff --git a/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiRoutes.kt b/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiRoutes.kt
index 9208bd6..617d03c 100644
--- a/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiRoutes.kt
+++ b/webserver/src/main/kotlin/space/mori/chzzk_bot/webserver/routes/ApiRoutes.kt
@@ -73,7 +73,7 @@ fun Routing.apiRoutes() {
                 return@get
             }
             println(session)
-            val user = UserService.getUserWithNaverId(session.id.toLong())
+            val user = UserService.getUserWithNaverId(session.id)
             if(user == null) {
                 call.respondText("No session found", status = HttpStatusCode.NotFound)
                 return@get