diff --git a/integration-test/dns-api-mesos/build.sbt b/integration-test/dns-api-mesos/build.sbt
index 01177505..7cf5c61b 100644
--- a/integration-test/dns-api-mesos/build.sbt
+++ b/integration-test/dns-api-mesos/build.sbt
@@ -10,7 +10,7 @@
 enablePlugins(JavaAppPackaging)
 name := "bootstrap-demo-dns-api"
 
-scalaVersion := "2.13.14"
+scalaVersion := "2.13.15"
 
 def pekkoManagementVersion(version: String) = version.split('+')(0)
 
diff --git a/integration-test/marathon-api-docker/build.sbt b/integration-test/marathon-api-docker/build.sbt
index 4f057991..52292eeb 100644
--- a/integration-test/marathon-api-docker/build.sbt
+++ b/integration-test/marathon-api-docker/build.sbt
@@ -11,7 +11,7 @@ import com.typesafe.sbt.packager.docker._
 
 name := "bootstrap-demo-marathon-api-docker"
 
-scalaVersion := "2.13.14"
+scalaVersion := "2.13.15"
 
 enablePlugins(JavaServerAppPackaging)
 
diff --git a/integration-test/marathon-api/build.sbt b/integration-test/marathon-api/build.sbt
index 5294c271..b64e7179 100644
--- a/integration-test/marathon-api/build.sbt
+++ b/integration-test/marathon-api/build.sbt
@@ -13,7 +13,7 @@ name := "bootstrap-demo-marathon-api"
 
 version := "1.1.4"
 
-scalaVersion := "2.13.14"
+scalaVersion := "2.13.15"
 
 val pekkoManagementVersion = "1.0.0"
 
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index ed372f68..e8805e46 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -12,7 +12,7 @@ import sbt._
 object Dependencies {
   // keep in sync with .github/workflows/unit-tests.yml
   val scala212Version = "2.12.20"
-  val scala213Version = "2.13.14"
+  val scala213Version = "2.13.15"
   val scala3Version = "3.3.3"
   val crossScalaVersions = Seq(scala212Version, scala213Version, scala3Version)