diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/CustomEmojiRepositoryImpl.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/CustomEmojiRepositoryImpl.kt
index c377d721..a73378ad 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/CustomEmojiRepositoryImpl.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/CustomEmojiRepositoryImpl.kt
@@ -110,7 +110,7 @@ object CustomEmojis : Table("emojis") {
     val instanceId = long("instance_id").references(Instance.id).nullable()
     val url = varchar("url", 255).uniqueIndex()
     val category = varchar("category", 255).nullable()
-    val createdAt = timestamp("created_at").defaultExpression(CurrentTimestamp())
+    val createdAt = timestamp("created_at").defaultExpression(CurrentTimestamp)
 
     override val primaryKey: PrimaryKey = PrimaryKey(id)
 
diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/RegisteredClientRepositoryImpl.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/RegisteredClientRepositoryImpl.kt
index 2ea06e5c..68a3177d 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/RegisteredClientRepositoryImpl.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/springframework/oauth2/RegisteredClientRepositoryImpl.kt
@@ -190,7 +190,7 @@ class RegisteredClientRepositoryImpl : RegisteredClientRepository {
 object RegisteredClient : Table("registered_client") {
     val id: Column<String> = varchar("id", 100)
     val clientId: Column<String> = varchar("client_id", 100)
-    val clientIdIssuedAt: Column<Instant> = timestamp("client_id_issued_at").defaultExpression(CurrentTimestamp())
+    val clientIdIssuedAt: Column<Instant> = timestamp("client_id_issued_at").defaultExpression(CurrentTimestamp)
     val clientSecret: Column<String?> = varchar("client_secret", 200).nullable().default(null)
     val clientSecretExpiresAt: Column<Instant?> = timestamp("client_secret_expires_at").nullable().default(null)
     val clientName: Column<String> = varchar("client_name", 200)
diff --git a/libs.versions.toml b/libs.versions.toml
index 76d37e4d..6c326cb3 100644
--- a/libs.versions.toml
+++ b/libs.versions.toml
@@ -2,7 +2,7 @@
 
 kotlin = "1.9.24"
 ktor = "2.3.9"
-exposed = "0.49.0"
+exposed = "0.50.1"
 javacv-ffmpeg = "6.1.1-1.5.10"
 detekt = "1.23.6"
 coroutines = "1.8.1"