diff --git a/build.sbt b/build.sbt
index d0b57c7a..753ddfe2 100644
--- a/build.sbt
+++ b/build.sbt
@@ -46,7 +46,7 @@ ThisBuild / githubWorkflowBuildPreamble +=
   )
 
 val Scala212 = "2.12.19"
-val Scala213 = "2.13.14"
+val Scala213 = "2.13.15"
 val Scala3 = "3.3.3"
 ThisBuild / crossScalaVersions := Seq(Scala212, Scala3, Scala213)
 
diff --git a/sbt-lambda/src/sbt-test/lambda-js-plugin/iolambda-simple/build.sbt b/sbt-lambda/src/sbt-test/lambda-js-plugin/iolambda-simple/build.sbt
index ddf1e789..64b04c03 100644
--- a/sbt-lambda/src/sbt-test/lambda-js-plugin/iolambda-simple/build.sbt
+++ b/sbt-lambda/src/sbt-test/lambda-js-plugin/iolambda-simple/build.sbt
@@ -1,2 +1,2 @@
-scalaVersion := "2.13.14"
+scalaVersion := "2.13.15"
 enablePlugins(LambdaJSPlugin)