diff --git a/src/main/kotlin/dev/usbharu/hideout/domain/model/UserAuthentication.kt b/src/main/kotlin/dev/usbharu/hideout/domain/model/UserAuthentication.kt
deleted file mode 100644
index 9dbd767f..00000000
--- a/src/main/kotlin/dev/usbharu/hideout/domain/model/UserAuthentication.kt
+++ /dev/null
@@ -1,21 +0,0 @@
-package dev.usbharu.hideout.domain.model
-
-import dev.usbharu.hideout.repository.Users
-import org.jetbrains.exposed.dao.id.LongIdTable
-import org.jetbrains.exposed.sql.ReferenceOption
-
-@Deprecated("")
-data class UserAuthentication(
-    val userId: Long,
-    val hash: String?,
-    val publicKey: String,
-    val privateKey: String?
-)
-
-@Deprecated("")
-object UsersAuthentication : LongIdTable("users_auth") {
-    val userId = long("user_id").references(Users.id, onUpdate = ReferenceOption.CASCADE)
-    val hash = varchar("hash", length = 64).nullable()
-    val publicKey = varchar("public_key", length = 1000_000)
-    val privateKey = varchar("private_key", length = 1000_000).nullable()
-}