diff --git a/mill-build/src/millbuild/settings/ScalaSettings.scala b/mill-build/src/millbuild/settings/ScalaSettings.scala
index 16a5eee91..21de8ee27 100644
--- a/mill-build/src/millbuild/settings/ScalaSettings.scala
+++ b/mill-build/src/millbuild/settings/ScalaSettings.scala
@@ -25,7 +25,7 @@ object ScalaSettings {
   implicit val rw: upickle.default.ReadWriter[ScalaSettings] = upickle.default.macroRW
 
   val defaultScala213Version = "2.13.16"
-  val defaultScala3xVersion  = "3.3.3"
+  val defaultScala3xVersion  = "3.3.7"
   val defaultCrossScalaVersions: List[String] =
     if (devMode) List(defaultScala3xVersion) else List(defaultScala3xVersion)
 }
diff --git a/project/deps.sc b/project/deps.sc
index b809d9bd1..08a0bd61f 100644
--- a/project/deps.sc
+++ b/project/deps.sc
@@ -243,7 +243,7 @@ object ScalaVersions {
   import DevMode._
   val all      = if (devMode) Seq(scala3x) else Seq(scala213, scala3x)
   def scala213 = "2.13.16"
-  def scala3x  = "3.3.3"
+  def scala3x  = "3.3.7"
 
   def scalaJSVersion     = "1.16.0"
   def scalaNativeVersion = "0.4.17"