diff --git a/tutorials/cloud-iot-coap-proxy/coap-dtls-client/pom.xml b/tutorials/cloud-iot-coap-proxy/coap-dtls-client/pom.xml
index 2fffc16bc1..b165540447 100644
--- a/tutorials/cloud-iot-coap-proxy/coap-dtls-client/pom.xml
+++ b/tutorials/cloud-iot-coap-proxy/coap-dtls-client/pom.xml
@@ -93,7 +93,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.3</version>
+            <version>1.4.12</version>
             <scope>runtime</scope>
         </dependency>
         <dependency>
@@ -173,8 +173,7 @@
                         <configuration>
                             <transformers>
                                 <!-- add Main-Class to manifest file -->
-                                <transformer
-                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                     <mainClass>com.agosto.coap.dtls.client.ConsoleClient</mainClass>
                                 </transformer>
                             </transformers>