diff --git a/samples/sample-01/pom.xml b/samples/sample-01/pom.xml
index 90953b89..d3abe008 100644
--- a/samples/sample-01/pom.xml
+++ b/samples/sample-01/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>com.example</groupId>
 	<artifactId>kafka-sample-01</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
+	<version>2.3.1.BUILD-SNAPSHOT</version>
 	<packaging>jar</packaging>
 
 	<name>kafka-sample-01</name>
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.1.0.RELEASE</version>
+		<version>2.2.0.BUILD-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/samples/sample-01/src/main/java/com/example/Application.java b/samples/sample-01/src/main/java/com/example/Application.java
index 4c81f6e5..5219c152 100644
--- a/samples/sample-01/src/main/java/com/example/Application.java
+++ b/samples/sample-01/src/main/java/com/example/Application.java
@@ -32,6 +32,7 @@ import org.springframework.kafka.listener.DeadLetterPublishingRecoverer;
 import org.springframework.kafka.listener.SeekToCurrentErrorHandler;
 import org.springframework.kafka.support.converter.RecordMessageConverter;
 import org.springframework.kafka.support.converter.StringJsonMessageConverter;
+import org.springframework.util.backoff.FixedBackOff;
 
 import com.common.Foo2;
 
@@ -58,7 +59,7 @@ public class Application {
 		ConcurrentKafkaListenerContainerFactory<Object, Object> factory = new ConcurrentKafkaListenerContainerFactory<>();
 		configurer.configure(factory, kafkaConsumerFactory);
 		factory.setErrorHandler(new SeekToCurrentErrorHandler(
-				new DeadLetterPublishingRecoverer(template), 3)); // dead-letter after 3 tries
+				new DeadLetterPublishingRecoverer(template), new FixedBackOff(0L, 2))); // dead-letter after 3 tries
 		return factory;
 	}
 
diff --git a/samples/sample-02/pom.xml b/samples/sample-02/pom.xml
index 4ae2b989..c4994274 100644
--- a/samples/sample-02/pom.xml
+++ b/samples/sample-02/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>com.example</groupId>
 	<artifactId>kafka-sample-02</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
+	<version>2.3.1.BUILD-SNAPSHOT</version>
 	<packaging>jar</packaging>
 
 	<name>kafka-sample-02</name>
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.1.0.RELEASE</version>
+		<version>2.2.0.BUILD-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/samples/sample-02/src/main/java/com/example/Application.java b/samples/sample-02/src/main/java/com/example/Application.java
index c65050e6..33ae67cf 100644
--- a/samples/sample-02/src/main/java/com/example/Application.java
+++ b/samples/sample-02/src/main/java/com/example/Application.java
@@ -34,6 +34,7 @@ import org.springframework.kafka.support.converter.DefaultJackson2JavaTypeMapper
 import org.springframework.kafka.support.converter.Jackson2JavaTypeMapper.TypePrecedence;
 import org.springframework.kafka.support.converter.RecordMessageConverter;
 import org.springframework.kafka.support.converter.StringJsonMessageConverter;
+import org.springframework.util.backoff.FixedBackOff;
 
 import com.common.Bar2;
 import com.common.Foo2;
@@ -53,7 +54,7 @@ public class Application {
 		ConcurrentKafkaListenerContainerFactory<Object, Object> factory = new ConcurrentKafkaListenerContainerFactory<>();
 		configurer.configure(factory, kafkaConsumerFactory);
 		factory.setErrorHandler(new SeekToCurrentErrorHandler(
-				new DeadLetterPublishingRecoverer(template), 3));
+				new DeadLetterPublishingRecoverer(template), new FixedBackOff(0L, 2)));
 		return factory;
 	}
 
diff --git a/samples/sample-03/pom.xml b/samples/sample-03/pom.xml
index d8b949b9..e50ef42d 100644
--- a/samples/sample-03/pom.xml
+++ b/samples/sample-03/pom.xml
@@ -5,7 +5,7 @@
 
 	<groupId>com.example</groupId>
 	<artifactId>kafka-sample-03</artifactId>
-	<version>0.0.1-SNAPSHOT</version>
+	<version>2.3.1.BUILD-SNAPSHOT</version>
 	<packaging>jar</packaging>
 
 	<name>kafka-sample-03</name>
@@ -14,7 +14,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.1.0.RELEASE</version>
+		<version>2.2.0.BUILD-SNAPSHOT</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 
diff --git a/samples/sample-03/src/main/java/com/example/Application.java b/samples/sample-03/src/main/java/com/example/Application.java
index 34219843..b0554a54 100644
--- a/samples/sample-03/src/main/java/com/example/Application.java
+++ b/samples/sample-03/src/main/java/com/example/Application.java
@@ -30,6 +30,7 @@ import org.springframework.boot.autoconfigure.kafka.ConcurrentKafkaListenerConta
 import org.springframework.context.annotation.Bean;
 import org.springframework.kafka.annotation.KafkaListener;
 import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory;
+import org.springframework.kafka.config.TopicBuilder;
 import org.springframework.kafka.core.ConsumerFactory;
 import org.springframework.kafka.core.KafkaTemplate;
 import org.springframework.kafka.support.converter.BatchMessagingMessageConverter;
@@ -56,9 +57,10 @@ public class Application {
 	@Bean
 	public ConcurrentKafkaListenerContainerFactory<?, ?> kafkaListenerContainerFactory(
 			ConcurrentKafkaListenerContainerFactoryConfigurer configurer,
-			ConsumerFactory<Object, Object> kafkaConsumerFactory,
-			KafkaTemplate<Object, Object> template) {
-		ConcurrentKafkaListenerContainerFactory<Object, Object> factory = new ConcurrentKafkaListenerContainerFactory<>();
+			ConsumerFactory<Object, Object> kafkaConsumerFactory) {
+
+		ConcurrentKafkaListenerContainerFactory<Object, Object> factory =
+				new ConcurrentKafkaListenerContainerFactory<>();
 		configurer.configure(factory, kafkaConsumerFactory);
 		factory.setBatchListener(true);
 		factory.setMessageConverter(batchConverter());
@@ -92,8 +94,13 @@ public class Application {
 	}
 
 	@Bean
-	public NewTopic topic() {
-		return new NewTopic("topic2", 1, (short) 1);
+	public NewTopic topic2() {
+		return TopicBuilder.name("topic2").partitions(1).replicas(1).build();
+	}
+
+	@Bean
+	public NewTopic topic3() {
+		return TopicBuilder.name("topic3").partitions(1).replicas(1).build();
 	}
 
 }