diff --git a/samples/server/petstore/java-undertow/pom.xml b/samples/server/petstore/java-undertow/pom.xml
index 53ccffba47d4..b03dd9b5527b 100644
--- a/samples/server/petstore/java-undertow/pom.xml
+++ b/samples/server/petstore/java-undertow/pom.xml
@@ -26,7 +26,7 @@
         <version.commons.codec>1.10</version.commons.codec>
         <version.encoder>1.2</version.encoder>
         <version.metrics>3.1.2</version.metrics>
-        <version.logback>1.2.0</version.logback>
+        <version.logback>1.5.25</version.logback>
         <version.junit>4.13</version.junit>
         <version.mockito>2.1.0-beta.124</version.mockito>
         <version.undertow>1.4.0.Final</version.undertow>
@@ -169,8 +169,7 @@
                         </goals>
                         <configuration>
                             <transformers>
-                                <transformer
-                                        implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                             </transformers>
                         </configuration>
                     </execution>