diff --git a/src/main/scala/net/yoshinorin/qualtet/BootStrap.scala b/src/main/scala/net/yoshinorin/qualtet/BootStrap.scala
index 814beca0..f24aad42 100644
--- a/src/main/scala/net/yoshinorin/qualtet/BootStrap.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/BootStrap.scala
@@ -30,11 +30,10 @@ object BootStrap extends IOApp {
   }
 
   def run(args: List[String]): IO[ExitCode] = {
-    val host = Ipv4Address.fromString(Modules.config.http.host).getOrElse(ipv4"127.0.0.1")
-    val port = Port.fromInt(Modules.config.http.port).getOrElse(port"9001")
-
     Modules.transactorResource.use { tx =>
       val modules = new Modules(tx)
+      val host = Ipv4Address.fromString(modules.config.http.host).getOrElse(ipv4"127.0.0.1")
+      val port = Port.fromInt(modules.config.http.port).getOrElse(port"9001")
       (for {
         _ <- logger.info(ApplicationInfo.asJson)
         _ <- IO(modules.migrator.migrate(modules.contentTypeService))
diff --git a/src/main/scala/net/yoshinorin/qualtet/Modules.scala b/src/main/scala/net/yoshinorin/qualtet/Modules.scala
index 606c4e25..eacebd7e 100644
--- a/src/main/scala/net/yoshinorin/qualtet/Modules.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/Modules.scala
@@ -53,8 +53,9 @@ import java.security.SecureRandom
 import java.util.concurrent.TimeUnit
 
 object Modules {
-  val config = ApplicationConfig.load
-  val doobieTransactor: DoobieTransactor[Aux] = summon[DoobieTransactor[Aux]]
+  private val config = ApplicationConfig.load
+  private val doobieTransactor: DoobieTransactor[Aux] = summon[DoobieTransactor[Aux]]
+
   val transactorResource = doobieTransactor.make(config.db)
   given log4catsLogger: Log4CatsLoggerFactory[IO] = Log4CatsSlf4jFactory.create[IO]
 }
diff --git a/src/test/scala/net/yoshinorin/qualtet/auth/JwtSpec.scala b/src/test/scala/net/yoshinorin/qualtet/auth/JwtSpec.scala
index 96d9d57e..b1d8f728 100644
--- a/src/test/scala/net/yoshinorin/qualtet/auth/JwtSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/auth/JwtSpec.scala
@@ -20,7 +20,7 @@ import java.time.Instant
 class JwtSpec extends AnyWordSpec {
 
   val mod = Modules(fixtureTx)
-  val config = Modules.config
+  val config = mod.config
   val jc: JwtClaim = JwtClaim(
     iss = config.jwt.iss,
     aud = config.jwt.aud,
diff --git a/src/test/scala/net/yoshinorin/qualtet/config/ConfigSpec.scala b/src/test/scala/net/yoshinorin/qualtet/config/ConfigSpec.scala
index a138f7d4..2caab16d 100644
--- a/src/test/scala/net/yoshinorin/qualtet/config/ConfigSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/config/ConfigSpec.scala
@@ -1,6 +1,6 @@
 package net.yoshinorin.qualtet.config
 
-import net.yoshinorin.qualtet.Modules.*
+import net.yoshinorin.qualtet.fixture.Fixture.config
 import org.scalatest.wordspec.AnyWordSpec
 
 // testOnly net.yoshinorin.qualtet.config.ConfigSpec
diff --git a/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala b/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
index 363b925d..6e1b59bf 100644
--- a/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
@@ -11,6 +11,7 @@ import org.typelevel.log4cats.slf4j.{Slf4jFactory => Log4CatsSlf4jFactory}
 import com.github.benmanes.caffeine.cache.Caffeine
 import com.github.benmanes.caffeine.cache.{Cache => CaffeineCache}
 import com.github.plokhotnyuk.jsoniter_scala.core.JsonValueCodec
+import net.yoshinorin.qualtet.config.ApplicationConfig
 import net.yoshinorin.qualtet.http.AuthProvider
 import net.yoshinorin.qualtet.http.CorsProvider
 import net.yoshinorin.qualtet.cache.CacheModule
@@ -53,15 +54,16 @@ object Fixture {
     ULID.newULIDString.toLower
   }
 
-  val h: String = Modules.config.http.host
-  val p: String = Modules.config.http.port.toString()
+  val config = ApplicationConfig.load
+  val h: String = config.http.host
+  val p: String = config.http.port.toString()
   val host = Uri.unsafeFromString(s"http://${h}:${p}")
 
   val fixtureTx = Transactor.fromDriverManager[IO](
     driver = "org.mariadb.jdbc.Driver",
-    url = Modules.config.db.url,
-    user = Modules.config.db.user,
-    password = Modules.config.db.password,
+    url = config.db.url,
+    user = config.db.user,
+    password = config.db.password,
     logHandler = None
   )
   private val modules = Modules(fixtureTx)