diff --git a/build.sbt b/build.sbt
index 560eadbd..e4e10f43 100644
--- a/build.sbt
+++ b/build.sbt
@@ -10,7 +10,7 @@ ThisBuild / developers := List(
 // publish website from this branch
 ThisBuild / tlSitePublishBranch := Some("main")
 
-val Scala213 = "2.13.14"
+val Scala213 = "2.13.15"
 ThisBuild / crossScalaVersions := Seq("2.12.19", Scala213, "3.3.4")
 ThisBuild / scalaVersion := Scala213 // the default Scala