diff --git a/samples/server/petstore/java-undertow/pom.xml b/samples/server/petstore/java-undertow/pom.xml
index 9aedbabf8bfb..2aeee3308907 100644
--- a/samples/server/petstore/java-undertow/pom.xml
+++ b/samples/server/petstore/java-undertow/pom.xml
@@ -29,7 +29,7 @@
         <version.logback>1.4.13</version.logback>
         <version.junit>4.13.2</version.junit>
         <version.mockito>2.1.0-beta.124</version.mockito>
-        <version.undertow>2.3.14.Final</version.undertow>
+        <version.undertow>2.3.18.Final</version.undertow>
         <version.jsonpath>2.2.0</version.jsonpath>
         <version.httpclient>4.5.13</version.httpclient>
         <version.httpasyncclient>4.1.2</version.httpasyncclient>
@@ -190,8 +190,7 @@
                         </goals>
                         <configuration>
                             <transformers>
-                                <transformer
-                                        implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                             </transformers>
                         </configuration>
                     </execution>