diff --git a/.travis.yml b/.travis.yml
index ec94ed9..37bb997 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -37,7 +37,7 @@ jobs:
     - stage: deploy
       name: "Publish artifacts to Bintray"
       script: sbt +publish
-      scala: 2.13.5
+      scala: 2.13.8
       env:
       - TRAVIS_JDK=11
         # encrypt with: travis encrypt --pro BINTRAY_USER=...
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
index b31c98a..114e808 100644
--- a/project/Dependencies.scala
+++ b/project/Dependencies.scala
@@ -3,7 +3,7 @@ import sbt._
 object Dependencies {
   // scalaVersion needs to be kept in sync with travis-ci
   val Scala212 = "2.12.13"
-  val Scala213 = "2.13.5"
+  val Scala213 = "2.13.8"
   val ScalaVersions = Seq(Scala212, Scala213)
 
   val PlayVersion = sys.props.getOrElse("play.version", sys.env.getOrElse("PLAY_VERSION", "2.8.0"))
diff --git a/samples/compile-timeDI/build.sbt b/samples/compile-timeDI/build.sbt
index 44cc90d..5ccc3b2 100644
--- a/samples/compile-timeDI/build.sbt
+++ b/samples/compile-timeDI/build.sbt
@@ -5,9 +5,9 @@ name := "compile-time-DI"
 
 ThisBuild / dynverVTagPrefix := false
 
-scalaVersion := "2.13.5"
+scalaVersion := "2.13.8"
 
-crossScalaVersions := Seq("2.12.13", "2.13.5")
+crossScalaVersions := Seq("2.12.13", "2.13.8")
 
 libraryDependencies ++= Seq(
   "com.typesafe.play" %% "play-mailer" % version.value,
diff --git a/samples/runtimeDI/build.sbt b/samples/runtimeDI/build.sbt
index 233ded9..3bbe242 100644
--- a/samples/runtimeDI/build.sbt
+++ b/samples/runtimeDI/build.sbt
@@ -5,9 +5,9 @@ name := "runtime-DI"
 
 ThisBuild / dynverVTagPrefix := false
 
-scalaVersion := "2.13.5"
+scalaVersion := "2.13.8"
 
-crossScalaVersions := Seq("2.12.13", "2.13.5")
+crossScalaVersions := Seq("2.12.13", "2.13.8")
 
 libraryDependencies ++= Seq(
   "com.typesafe.play" %% "play-mailer-guice" % version.value,