diff --git a/samples/akka-sample-cluster-java/build.sbt b/samples/akka-sample-cluster-java/build.sbt
index 3f48ac609e9..3fd7b819269 100644
--- a/samples/akka-sample-cluster-java/build.sbt
+++ b/samples/akka-sample-cluster-java/build.sbt
@@ -3,7 +3,7 @@ import com.typesafe.sbt.SbtMultiJvm.MultiJvmKeys.MultiJvm
 
 val AkkaVersion = "2.10.9"
 val AkkaDiagnosticsVersion = "2.1.0"
-val LogbackClassicVersion = "1.2.11" 
+val LogbackClassicVersion = "1.5.19" 
 val ScalaTestVersion = "3.1.1"
 
 lazy val `akka-sample-cluster-java` = project
diff --git a/samples/akka-sample-cluster-scala/build.sbt b/samples/akka-sample-cluster-scala/build.sbt
index 5820415717b..bd3028aa9c9 100644
--- a/samples/akka-sample-cluster-scala/build.sbt
+++ b/samples/akka-sample-cluster-scala/build.sbt
@@ -3,7 +3,7 @@ import com.typesafe.sbt.SbtMultiJvm.MultiJvmKeys.MultiJvm
 
 val AkkaVersion = "2.10.9"
 val AkkaDiagnosticsVersion = "2.1.1"
-val LogbackClassicVersion = "1.5.18"
+val LogbackClassicVersion = "1.5.19"
 val ScalaTestVersion = "3.2.17"
 
 lazy val `akka-sample-cluster-scala` = project
diff --git a/samples/akka-sample-distributed-data-java/build.sbt b/samples/akka-sample-distributed-data-java/build.sbt
index 56bcf7d2432..e90094d9c52 100644
--- a/samples/akka-sample-distributed-data-java/build.sbt
+++ b/samples/akka-sample-distributed-data-java/build.sbt
@@ -3,7 +3,7 @@ import com.typesafe.sbt.SbtMultiJvm.MultiJvmKeys.MultiJvm
 
 val AkkaVersion = "2.10.8"
 val AkkaDiagnosticsVersion = "2.1.0"
-val LogbackClassicVersion = "1.2.11" 
+val LogbackClassicVersion = "1.5.19" 
 val ScalaTestVersion = "3.1.1"
 
 val `akka-sample-distributed-data-java` = project
diff --git a/samples/akka-sample-distributed-data-scala/build.sbt b/samples/akka-sample-distributed-data-scala/build.sbt
index f68fcc87d7e..cc5172ebd5f 100644
--- a/samples/akka-sample-distributed-data-scala/build.sbt
+++ b/samples/akka-sample-distributed-data-scala/build.sbt
@@ -2,7 +2,7 @@ import com.typesafe.sbt.MultiJvmPlugin.multiJvmSettings
 
 val AkkaVersion = "2.10.9"
 val AkkaDiagnosticsVersion = "2.1.1"
-val LogbackClassicVersion = "1.5.18"
+val LogbackClassicVersion = "1.5.19"
 val ScalaTestVersion = "3.2.17"
 
 val `akka-sample-distributed-data-scala` = project
diff --git a/samples/akka-sample-fsm-scala/build.sbt b/samples/akka-sample-fsm-scala/build.sbt
index 66fa043ce2e..10e1572e571 100644
--- a/samples/akka-sample-fsm-scala/build.sbt
+++ b/samples/akka-sample-fsm-scala/build.sbt
@@ -2,7 +2,7 @@ organization := "com.lightbend.akka.samples"
 name := "akka-sample-fsm-scala"
 
 val AkkaVersion = "2.10.9"
-val LogbackClassicVersion = "1.5.1"
+val LogbackClassicVersion = "1.5.19"
 val AkkaDiagnosticsVersion = "2.1.0"
 
 scalaVersion := "2.13.12"