diff --git a/mill-build/build.sc b/mill-build/build.sc
index d20ae80ee..098d75827 100644
--- a/mill-build/build.sc
+++ b/mill-build/build.sc
@@ -4,10 +4,10 @@ object millbuild extends MillBuildRootModule {
   override def scalacOptions = super.scalacOptions() ++ Seq("-feature", "-deprecation", "-unchecked")
   override def ivyDeps = super.ivyDeps() ++ Seq(
     ivy"dev.zio::zio:2.1.5",
-    ivy"dev.zio::zio-config:4.0.3",
-    ivy"dev.zio::zio-config-magnolia:4.0.3",
-    ivy"dev.zio::zio-config-typesafe:4.0.3",
+    ivy"dev.zio::zio-config:4.0.6",
+    ivy"dev.zio::zio-config-magnolia:4.0.6",
+    ivy"dev.zio::zio-config-typesafe:4.0.6",
     ivy"dev.zio::zio-config-yaml:4.0.0-RC16",
-    ivy"dev.zio::zio-config-refined:4.0.3"
+    ivy"dev.zio::zio-config-refined:4.0.6"
   )
 }
diff --git a/project/deps.sc b/project/deps.sc
index b809d9bd1..c432aa503 100644
--- a/project/deps.sc
+++ b/project/deps.sc
@@ -228,7 +228,7 @@ object Versions {
   val upickle                    = "3.0.0-M1"
   val zio                        = "2.1.11"
 
-  val `zio-config`       = "4.0.3"
+  val `zio-config`       = "4.0.6"
   val `zio-cli`          = "0.7.0"
   val `zio-interop-cats` = "23.1.0.3"
   val `zio-json`         = "0.7.3"