diff --git a/modules/logging/api/src/main/scala/sharry/logging/LazyMap.scala b/modules/logging/api/src/main/scala/sharry/logging/LazyMap.scala
new file mode 100644
index 00000000..f1940018
--- /dev/null
+++ b/modules/logging/api/src/main/scala/sharry/logging/LazyMap.scala
@@ -0,0 +1,40 @@
+package sharry.logging
+
+import sharry.logging.LazyMap.Val
+
+final class LazyMap[A, B](
+    private val values: Map[A, Val[B]]
+) {
+  lazy val toMap: Map[A, B] = values.view.mapValues(_.value).toMap
+
+  def updated(key: A, value: => B): LazyMap[A, B] =
+    new LazyMap(values.updated(key, Val(value)))
+
+  def get(key: A): Option[() => B] =
+    values.get(key).map(e => () => e.value)
+
+  def ++(lm: LazyMap[A, B]): LazyMap[A, B] =
+    new LazyMap(values ++ lm.values)
+
+  def addMap(m: Map[A, B]): LazyMap[A, B] =
+    this ++ LazyMap.fromMap(m)
+
+  def toDeferred: Map[A, () => B] =
+    values.view.mapValues(e => () => e.value).toMap
+}
+
+object LazyMap {
+  private[this] val emptyMap = new LazyMap[Any, Any](Map.empty)
+
+  def empty[A, B]: LazyMap[A, B] = emptyMap.asInstanceOf[LazyMap[A, B]]
+
+  def fromMap[A, B](m: Map[A, B]): LazyMap[A, B] =
+    new LazyMap(m.view.mapValues(a => Val(a)).toMap)
+
+  final private class Val[B](v: => B) {
+    lazy val value = v
+  }
+  private object Val {
+    def apply[B](v: => B): Val[B] = new Val(v)
+  }
+}
diff --git a/modules/logging/api/src/main/scala/sharry/logging/LogEvent.scala b/modules/logging/api/src/main/scala/sharry/logging/LogEvent.scala
index a0b573d0..f241169f 100644
--- a/modules/logging/api/src/main/scala/sharry/logging/LogEvent.scala
+++ b/modules/logging/api/src/main/scala/sharry/logging/LogEvent.scala
@@ -12,8 +12,8 @@ import sourcecode._
 final case class LogEvent(
     level: Level,
     msg: () => String,
-    additional: List[() => LogEvent.AdditionalMsg],
-    data: Map[String, () => Json],
+    additional: LazyList[LogEvent.AdditionalMsg],
+    data: LazyMap[String, Json],
     pkg: Pkg,
     fileName: FileName,
     name: Name,
@@ -24,21 +24,21 @@ final case class LogEvent(
     s"${level.name} ${name.value}/${fileName}:${line.value} - ${msg()}"
 
   def data[A: Encoder](key: String, value: => A): LogEvent =
-    copy(data = data.updated(key, () => Encoder[A].apply(value)))
+    copy(data = data.updated(key, Encoder[A].apply(value)))
 
   def addData(m: Map[String, Json]): LogEvent =
-    copy(data = data ++ m.view.mapValues(json => () => json).toMap)
+    copy(data = data.addMap(m))
 
   def addMessage(msg: => String): LogEvent =
-    copy(additional = (() => Left(msg)) :: additional)
+    copy(additional = Left(msg) #:: additional)
 
   def addError(ex: Throwable): LogEvent =
-    copy(additional = (() => Right(ex)) :: additional)
+    copy(additional = Right(ex) #:: additional)
 
   def findErrors: List[Throwable] =
-    additional.map(a => a()).collect { case Right(ex) =>
+    additional.collect { case Right(ex) =>
       ex
-    }
+    }.toList
 }
 
 object LogEvent {
@@ -50,5 +50,6 @@ object LogEvent {
       fileName: FileName,
       name: Name,
       line: Line
-  ): LogEvent = LogEvent(l, () => m, Nil, Map.empty, pkg, fileName, name, line)
+  ): LogEvent =
+    LogEvent(l, () => m, LazyList.empty, LazyMap.empty, pkg, fileName, name, line)
 }
diff --git a/modules/logging/scribe/src/main/scala/sharry/logging/impl/Record.scala b/modules/logging/scribe/src/main/scala/sharry/logging/impl/Record.scala
index ca60d693..f83631d0 100644
--- a/modules/logging/scribe/src/main/scala/sharry/logging/impl/Record.scala
+++ b/modules/logging/scribe/src/main/scala/sharry/logging/impl/Record.scala
@@ -12,7 +12,7 @@ import io.circe.syntax._
 import io.circe.{Encoder, Json}
 import perfolation._
 import scribe.LogRecord
-import scribe.data.MDC
+import scribe.mdc.MDC
 import scribe.message.Message
 
 // From: https://github.com/outr/scribe/blob/8e99521e1ee1f0c421629764dd96e4eb193d84bd/json/shared/src/main/scala/scribe/json/JsonWriter.scala
diff --git a/modules/logging/scribe/src/main/scala/sharry/logging/impl/ScribeWrapper.scala b/modules/logging/scribe/src/main/scala/sharry/logging/impl/ScribeWrapper.scala
index e063b9b5..a4b69677 100644
--- a/modules/logging/scribe/src/main/scala/sharry/logging/impl/ScribeWrapper.scala
+++ b/modules/logging/scribe/src/main/scala/sharry/logging/impl/ScribeWrapper.scala
@@ -12,7 +12,7 @@ import cats.effect.Sync
 import sharry.logging.{Level, LogEvent, Logger}
 
 import scribe.LoggerSupport
-import scribe.data.MDC
+import scribe.mdc.{MDC, MDCMap}
 import scribe.message.LoggableMessage
 
 private[logging] object ScribeWrapper {
@@ -39,14 +39,18 @@ private[logging] object ScribeWrapper {
       case Level.Trace => scribe.Level.Trace
     }
 
+  private[this] def emptyMDC: MDC =
+    new MDCMap(None)
+
   private[this] def convert(ev: LogEvent) = {
     val level = convertLevel(ev.level)
-    val additional: List[LoggableMessage] = ev.additional.map { x =>
-      x() match {
-        case Right(ex) => LoggableMessage.throwable2Message(ex)
-        case Left(msg) => LoggableMessage.string2Message(msg)
+    val additional: List[LoggableMessage] = ev.additional
+      .map {
+        case Right(ex) => LoggableMessage.throwableList2Messages(List(ex))
+        case Left(msg) => LoggableMessage.stringList2Messages(List(msg))
       }
-    }
+      .toList
+      .flatten
     LoggerSupport(
       level,
       ev.msg() :: additional,
@@ -54,8 +58,8 @@ private[logging] object ScribeWrapper {
       ev.fileName,
       ev.name,
       ev.line,
-      MDC.instance
+      emptyMDC
     )
-      .copy(data = ev.data)
+      .copy(data = ev.data.toDeferred)
   }
 }
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index cc4800e5..491ca4b5 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -21,7 +21,7 @@ object Dependencies {
   val OrganizeImportsVersion = "0.6.0"
   val PostgresVersion = "42.7.1"
   val PureConfigVersion = "0.17.4"
-  val ScribeVersion = "3.11.9"
+  val ScribeVersion = "3.13.0"
   val SourcecodeVersion = "0.3.1"
   val SwaggerVersion = "5.10.3"
   val TikaVersion = "2.9.1"