diff --git a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java
index 43facc27122..c7b8edf8743 100644
--- a/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java
+++ b/samples/client/petstore/java/vertx-no-nullable/src/main/java/org/openapitools/client/ApiClient.java
@@ -28,6 +28,7 @@ import io.vertx.ext.web.client.HttpResponse;
 import io.vertx.ext.web.client.WebClient;
 import io.vertx.ext.web.client.WebClientOptions;
 
+import java.time.OffsetDateTime;
 import java.text.DateFormat;
 import java.util.*;
 import java.util.function.Consumer;
@@ -37,7 +38,7 @@ import java.util.regex.Pattern;
 import static java.util.stream.Collectors.toMap;
 
 @javax.annotation.Generated(value = "org.openapitools.codegen.languages.JavaClientCodegen")
-public class ApiClient {
+public class ApiClient extends JavaTimeFormatter {
 
     private static final Pattern CONTENT_DISPOSITION_PATTERN = Pattern.compile("filename=['\"]?([^'\"\\s]+)['\"]?");
     private static final OpenOptions FILE_DOWNLOAD_OPTIONS = new OpenOptions().setCreate(true).setTruncateExisting(true);
@@ -284,6 +285,8 @@ public class ApiClient {
             return "";
         } else if (param instanceof Date) {
             return formatDate((Date) param);
+        } else if (param instanceof OffsetDateTime) {
+            return formatOffsetDateTime((OffsetDateTime) param);
         } else if (param instanceof Collection) {
             StringBuilder b = new StringBuilder();
             for (Object o : (Collection) param) {
diff --git a/samples/server/petstore/springboot-beanvalidation-no-nullable/pom.xml b/samples/server/petstore/springboot-beanvalidation-no-nullable/pom.xml
index 7a81361e60b..f29945545b8 100644
--- a/samples/server/petstore/springboot-beanvalidation-no-nullable/pom.xml
+++ b/samples/server/petstore/springboot-beanvalidation-no-nullable/pom.xml
@@ -9,7 +9,7 @@
         <java.version>1.7</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
-        <springfox-version>2.8.0</springfox-version>
+        <springfox-version>2.9.2</springfox-version>
     </properties>
     <parent>
         <groupId>org.springframework.boot</groupId>
@@ -51,7 +51,7 @@
         <dependency>
             <groupId>javax.xml.bind</groupId>
             <artifactId>jaxb-api</artifactId>
-            <version>2.2.11</version>
+            <version>2.3.1</version>
         </dependency>
         <dependency>
             <groupId>com.github.joschi.jackson</groupId>