diff --git a/build.sbt b/build.sbt
index 1a56030..ac17d64 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ import laika.helium.config.IconLink
 import org.typelevel.sbt.gha.WorkflowStep._
 import org.typelevel.sbt.site.GenericSiteSettings
 
-val Scala213 = "2.13.12"
+val Scala213 = "2.13.13"
 val Scala3 = "3.3.1"
 ThisBuild / crossScalaVersions := Seq("2.12.18", Scala213, Scala3)
 ThisBuild / scalaVersion := crossScalaVersions.value.last