diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposed/UriColumnType.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposed/UriColumnType.kt
new file mode 100644
index 00000000..57c22b9c
--- /dev/null
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposed/UriColumnType.kt
@@ -0,0 +1,22 @@
+package dev.usbharu.hideout.core.infrastructure.exposed
+
+import org.jetbrains.exposed.sql.Column
+import org.jetbrains.exposed.sql.ColumnType
+import org.jetbrains.exposed.sql.Table
+import org.jetbrains.exposed.sql.vendors.currentDialect
+import java.net.URI
+
+class UriColumnType(val colLength: Int) : ColumnType<URI>() {
+    override fun sqlType(): String = currentDialect.dataTypeProvider.varcharType(colLength)
+
+    override fun valueFromDB(value: Any): URI? = when (value) {
+        is URI -> value
+        is String -> URI(value)
+        is CharSequence -> URI(value.toString())
+        else -> error("Unexpected value of type String: $value of ${value::class.qualifiedName}")
+    }
+
+    override fun notNullValueToDB(value: URI): Any = value.toString()
+}
+
+fun Table.uri(name: String, colLength: Int): Column<URI> = registerColumn(name, UriColumnType(colLength))
\ No newline at end of file
diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedquery/ExposedUserTimelineQueryService.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedquery/ExposedUserTimelineQueryService.kt
index 6bc068ff..f24d6ff3 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedquery/ExposedUserTimelineQueryService.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedquery/ExposedUserTimelineQueryService.kt
@@ -92,7 +92,7 @@ class ExposedUserTimelineQueryService : UserTimelineQueryService, AbstractReposi
                 screenName = it[Actors.screenName],
                 url = URI.create(it[Actors.url]),
                 locked = it[Actors.locked],
-                icon = it.getOrNull(iconMedia[Media.url])?.let { URI.create(it) }
+                icon = it.getOrNull(iconMedia[Media.url])
             ),
             overview = it[authorizedQuery[Posts.overview]],
             text = it[authorizedQuery[Posts.text]],
diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepository.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepository.kt
index b6da65e8..03502b72 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepository.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepository.kt
@@ -18,12 +18,12 @@ package dev.usbharu.hideout.core.infrastructure.exposedrepository
 
 import dev.usbharu.hideout.core.domain.model.actor.ActorId
 import dev.usbharu.hideout.core.domain.model.media.*
+import dev.usbharu.hideout.core.infrastructure.exposed.uri
 import org.jetbrains.exposed.sql.*
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
 import org.slf4j.Logger
 import org.slf4j.LoggerFactory
 import org.springframework.stereotype.Repository
-import java.net.URI
 import dev.usbharu.hideout.core.domain.model.media.Media as EntityMedia
 
 @Repository
@@ -35,9 +35,9 @@ class ExposedMediaRepository : MediaRepository, AbstractRepository() {
         Media.upsert {
             it[id] = media.id.id
             it[name] = media.name.name
-            it[url] = media.url.toString()
-            it[remoteUrl] = media.remoteUrl?.toString()
-            it[thumbnailUrl] = media.thumbnailUrl?.toString()
+            it[url] = media.url
+            it[remoteUrl] = media.remoteUrl
+            it[thumbnailUrl] = media.thumbnailUrl
             it[type] = media.type.name
             it[blurhash] = media.blurHash?.hash
             it[mimeType] = media.mimeType.type + "/" + media.mimeType.subtype
@@ -83,9 +83,9 @@ fun ResultRow.toMedia(): EntityMedia {
     return EntityMedia(
         id = MediaId(this[Media.id]),
         name = MediaName(this[Media.name]),
-        url = URI.create(this[Media.url]),
-        remoteUrl = this[Media.remoteUrl]?.let { URI.create(it) },
-        thumbnailUrl = this[Media.thumbnailUrl]?.let { URI.create(it) },
+        url = this[Media.url],
+        remoteUrl = this[Media.remoteUrl],
+        thumbnailUrl = this[Media.thumbnailUrl],
         type = fileType,
         blurHash = this[Media.blurhash]?.let { MediaBlurHash(it) },
         mimeType = MimeType(mimeType.substringBefore("/"), mimeType.substringAfter("/"), fileType),
@@ -100,9 +100,9 @@ fun ResultRow.toMediaOrNull(): EntityMedia? {
     return EntityMedia(
         id = MediaId(this.getOrNull(Media.id) ?: return null),
         name = MediaName(this.getOrNull(Media.name) ?: return null),
-        url = URI.create(this.getOrNull(Media.url) ?: return null),
-        remoteUrl = this[Media.remoteUrl]?.let { URI.create(it) },
-        thumbnailUrl = this[Media.thumbnailUrl]?.let { URI.create(it) },
+        url = this.getOrNull(Media.url) ?: return null,
+        remoteUrl = this[Media.remoteUrl],
+        thumbnailUrl = this[Media.thumbnailUrl],
         type = FileType.valueOf(this[Media.type]),
         blurHash = this[Media.blurhash]?.let { MediaBlurHash(it) },
         mimeType = MimeType(mimeType.substringBefore("/"), mimeType.substringAfter("/"), fileType),
@@ -114,9 +114,9 @@ fun ResultRow.toMediaOrNull(): EntityMedia? {
 object Media : Table("media") {
     val id = long("id")
     val name = varchar("name", 255)
-    val url = varchar("url", 255).uniqueIndex()
-    val remoteUrl = varchar("remote_url", 255).uniqueIndex().nullable()
-    val thumbnailUrl = varchar("thumbnail_url", 255).uniqueIndex().nullable()
+    val url = uri("url", 255).uniqueIndex()
+    val remoteUrl = uri("remote_url", 255).uniqueIndex().nullable()
+    val thumbnailUrl = uri("thumbnail_url", 255).uniqueIndex().nullable()
     val type = varchar("type", 100)
     val blurhash = varchar("blurhash", 255).nullable()
     val mimeType = varchar("mime_type", 255)
diff --git a/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepositoryTest.kt b/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepositoryTest.kt
index 2691252e..a1f7f425 100644
--- a/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepositoryTest.kt
+++ b/hideout-core/src/test/kotlin/dev/usbharu/hideout/core/infrastructure/exposedrepository/ExposedMediaRepositoryTest.kt
@@ -72,7 +72,7 @@ class ExposedMediaRepositoryTest : AbstractRepositoryTest(Media) {
             .row(0)
             .isEqualTo(Media.id, 1)
             .isEqualTo(Media.name, "name")
-            .isEqualTo(Media.url, "https://www.example.com")
+            .value(Media.url).isEqualTo("https://www.example.com")
             .isEqualTo(Media.remoteUrl, null)
             .isEqualTo(Media.thumbnailUrl, null)
             .isEqualTo(Media.type, "Audio")
@@ -165,7 +165,7 @@ class ExposedMediaRepositoryTest : AbstractRepositoryTest(Media) {
             .row(0)
             .isEqualTo(Media.id, 1)
             .isEqualTo(Media.name, "name")
-            .isEqualTo(Media.url, "https://www.example.com")
+            .value(Media.url).isEqualTo("https://www.example.com")
             .isEqualTo(Media.remoteUrl, null)
             .isEqualTo(Media.thumbnailUrl, null)
             .isEqualTo(Media.type, "Audio")