diff --git a/project/Deps.scala b/project/Deps.scala
index ad17331..85528d0 100644
--- a/project/Deps.scala
+++ b/project/Deps.scala
@@ -24,7 +24,7 @@ object Deps {
     val core2 = dep("org.scodec" %%% "scodec-core" % "2.3.1")
     val bits = dep("org.scodec" %%% "scodec-bits" % "1.2.1")
   }
-  val upickle = dep("com.lihaoyi" %%% "upickle" % "3.3.1")
+  val upickle = dep("com.lihaoyi" %%% "upickle" % "4.0.1")
   val jsoniter = dep("com.github.plokhotnyuk.jsoniter-scala" %%% "jsoniter-scala-core" % "2.30.11")
   val zioJson = dep("dev.zio" %%% "zio-json" % "0.7.3")