diff --git a/modules/openapi-generator/src/main/resources/JavaVertXWebServer/apiHandler.mustache b/modules/openapi-generator/src/main/resources/JavaVertXWebServer/apiHandler.mustache
index b8cab88ea443..e9a6bbf0663d 100644
--- a/modules/openapi-generator/src/main/resources/JavaVertXWebServer/apiHandler.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaVertXWebServer/apiHandler.mustache
@@ -5,7 +5,7 @@ package {{package}};
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import io.vertx.core.json.jackson.DatabindCodec;
-import io.vertx.ext.web.openapi.RouterFactory;
+import io.vertx.ext.web.openapi.RouterBuilder;
 import io.vertx.ext.web.validation.RequestParameters;
 import io.vertx.ext.web.validation.RequestParameter;
 import io.vertx.ext.web.validation.ValidationHandler;
@@ -27,10 +27,10 @@ public class {{classname}}Handler {
         this.apiImpl = new {{classname}}Impl();
     }
 
-    public void mount(RouterFactory factory) {
+    public void mount(RouterBuilder builder) {
 {{#operations}}
 {{#operation}}
-        factory.operation("{{operationId}}").handler(this::{{operationId}});
+        builder.operation("{{operationId}}").handler(this::{{operationId}});
 {{/operation}}
 {{/operations}}
     }
diff --git a/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/HttpServerVerticle.mustache b/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/HttpServerVerticle.mustache
index 51de8394f1a6..03001005bca8 100644
--- a/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/HttpServerVerticle.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/HttpServerVerticle.mustache
@@ -5,8 +5,8 @@ import io.vertx.core.Promise;
 import io.vertx.core.http.HttpServerOptions;
 import io.vertx.ext.web.Router;
 import io.vertx.ext.web.RoutingContext;
-import io.vertx.ext.web.openapi.RouterFactory;
-import io.vertx.ext.web.openapi.RouterFactoryOptions;
+import io.vertx.ext.web.openapi.RouterBuilder;
+import io.vertx.ext.web.openapi.RouterBuilderOptions;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 {{#apiInfo}}{{#apis}}
@@ -22,16 +22,16 @@ public class HttpServerVerticle extends AbstractVerticle {
 
     @Override
     public void start(Promise<Void> startPromise) {
-        RouterFactory.create(vertx, specFile)
-            .map(factory -> {
-              factory.setOptions(new RouterFactoryOptions()
+        RouterBuilder.create(vertx, specFile)
+            .map(builder -> {
+              builder.setOptions(new RouterBuilderOptions()
                   // For production use case, you need to enable this flag and provide the proper security handler
                   .setRequireSecurityHandlers(false)
               );
               {{#apiInfo}}{{#apis}}
-              {{classVarName}}Handler.mount(factory);{{/apis}}{{/apiInfo}}
+              {{classVarName}}Handler.mount(builder);{{/apis}}{{/apiInfo}}
 
-              Router router = factory.createRouter();
+              Router router = builder.createRouter();
               router.errorHandler(400, this::validationFailureHandler);
 
               return router;
diff --git a/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/pom.mustache b/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/pom.mustache
index 6f3497cd2311..da3bb233cf81 100644
--- a/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/pom.mustache
+++ b/modules/openapi-generator/src/main/resources/JavaVertXWebServer/supportFiles/pom.mustache
@@ -17,8 +17,8 @@
         <maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version>
         <exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>
 
-        <vertx.version>4.0.0.Beta3</vertx.version>
-        <junit-jupiter.version>5.6.2</junit-jupiter.version>
+        <vertx.version>4.0.0</vertx.version>
+        <junit-jupiter.version>5.7.0</junit-jupiter.version>
         <slf4j.version>1.7.30</slf4j.version>
         <jackson.version>2.11.2</jackson.version>
 
diff --git a/samples/server/petstore/java-vertx-web/.openapi-generator/FILES b/samples/server/petstore/java-vertx-web/.openapi-generator/FILES
index 4169de32e262..08e93e05a0c4 100644
--- a/samples/server/petstore/java-vertx-web/.openapi-generator/FILES
+++ b/samples/server/petstore/java-vertx-web/.openapi-generator/FILES
@@ -12,8 +12,6 @@ src/main/java/org/openapitools/vertxweb/server/api/UserApi.java
 src/main/java/org/openapitools/vertxweb/server/api/UserApiHandler.java
 src/main/java/org/openapitools/vertxweb/server/api/UserApiImpl.java
 src/main/java/org/openapitools/vertxweb/server/model/Category.java
-src/main/java/org/openapitools/vertxweb/server/model/InlineObject.java
-src/main/java/org/openapitools/vertxweb/server/model/InlineObject1.java
 src/main/java/org/openapitools/vertxweb/server/model/ModelApiResponse.java
 src/main/java/org/openapitools/vertxweb/server/model/Order.java
 src/main/java/org/openapitools/vertxweb/server/model/Pet.java
diff --git a/samples/server/petstore/java-vertx-web/.openapi-generator/VERSION b/samples/server/petstore/java-vertx-web/.openapi-generator/VERSION
index d99e7162d01f..3fa3b389a57d 100644
--- a/samples/server/petstore/java-vertx-web/.openapi-generator/VERSION
+++ b/samples/server/petstore/java-vertx-web/.openapi-generator/VERSION
@@ -1 +1 @@
-5.0.0-SNAPSHOT
\ No newline at end of file
+5.0.1-SNAPSHOT
\ No newline at end of file
diff --git a/samples/server/petstore/java-vertx-web/pom.xml b/samples/server/petstore/java-vertx-web/pom.xml
index e813663f8d17..56eebc06b103 100644
--- a/samples/server/petstore/java-vertx-web/pom.xml
+++ b/samples/server/petstore/java-vertx-web/pom.xml
@@ -17,8 +17,8 @@
         <maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version>
         <exec-maven-plugin.version>1.5.0</exec-maven-plugin.version>
 
-        <vertx.version>4.0.0.Beta3</vertx.version>
-        <junit-jupiter.version>5.6.2</junit-jupiter.version>
+        <vertx.version>4.0.0</vertx.version>
+        <junit-jupiter.version>5.7.0</junit-jupiter.version>
         <slf4j.version>1.7.30</slf4j.version>
         <jackson.version>2.11.2</jackson.version>
 
diff --git a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/HttpServerVerticle.java b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/HttpServerVerticle.java
index ceb3d606acd9..f06b6c3e0142 100644
--- a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/HttpServerVerticle.java
+++ b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/HttpServerVerticle.java
@@ -5,8 +5,8 @@
 import io.vertx.core.http.HttpServerOptions;
 import io.vertx.ext.web.Router;
 import io.vertx.ext.web.RoutingContext;
-import io.vertx.ext.web.openapi.RouterFactory;
-import io.vertx.ext.web.openapi.RouterFactoryOptions;
+import io.vertx.ext.web.openapi.RouterBuilder;
+import io.vertx.ext.web.openapi.RouterBuilderOptions;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -26,18 +26,18 @@ public class HttpServerVerticle extends AbstractVerticle {
 
     @Override
     public void start(Promise<Void> startPromise) {
-        RouterFactory.create(vertx, specFile)
-            .map(factory -> {
-              factory.setOptions(new RouterFactoryOptions()
+        RouterBuilder.create(vertx, specFile)
+            .map(builder -> {
+              builder.setOptions(new RouterBuilderOptions()
                   // For production use case, you need to enable this flag and provide the proper security handler
                   .setRequireSecurityHandlers(false)
               );
               
-              petHandler.mount(factory);
-              storeHandler.mount(factory);
-              userHandler.mount(factory);
+              petHandler.mount(builder);
+              storeHandler.mount(builder);
+              userHandler.mount(builder);
 
-              Router router = factory.createRouter();
+              Router router = builder.createRouter();
               router.errorHandler(400, this::validationFailureHandler);
 
               return router;
diff --git a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java
index 9dd5df60d58a..d215f5db7c52 100644
--- a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java
+++ b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/PetApiHandler.java
@@ -6,7 +6,7 @@
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import io.vertx.core.json.jackson.DatabindCodec;
-import io.vertx.ext.web.openapi.RouterFactory;
+import io.vertx.ext.web.openapi.RouterBuilder;
 import io.vertx.ext.web.validation.RequestParameters;
 import io.vertx.ext.web.validation.RequestParameter;
 import io.vertx.ext.web.validation.ValidationHandler;
@@ -28,15 +28,15 @@ public PetApiHandler() {
         this.apiImpl = new PetApiImpl();
     }
 
-    public void mount(RouterFactory factory) {
-        factory.operation("addPet").handler(this::addPet);
-        factory.operation("deletePet").handler(this::deletePet);
-        factory.operation("findPetsByStatus").handler(this::findPetsByStatus);
-        factory.operation("findPetsByTags").handler(this::findPetsByTags);
-        factory.operation("getPetById").handler(this::getPetById);
-        factory.operation("updatePet").handler(this::updatePet);
-        factory.operation("updatePetWithForm").handler(this::updatePetWithForm);
-        factory.operation("uploadFile").handler(this::uploadFile);
+    public void mount(RouterBuilder builder) {
+        builder.operation("addPet").handler(this::addPet);
+        builder.operation("deletePet").handler(this::deletePet);
+        builder.operation("findPetsByStatus").handler(this::findPetsByStatus);
+        builder.operation("findPetsByTags").handler(this::findPetsByTags);
+        builder.operation("getPetById").handler(this::getPetById);
+        builder.operation("updatePet").handler(this::updatePet);
+        builder.operation("updatePetWithForm").handler(this::updatePetWithForm);
+        builder.operation("uploadFile").handler(this::uploadFile);
     }
 
     private void addPet(RoutingContext routingContext) {
diff --git a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/StoreApiHandler.java b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/StoreApiHandler.java
index 32b410ad2f6c..584f7cc633da 100644
--- a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/StoreApiHandler.java
+++ b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/StoreApiHandler.java
@@ -4,7 +4,7 @@
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import io.vertx.core.json.jackson.DatabindCodec;
-import io.vertx.ext.web.openapi.RouterFactory;
+import io.vertx.ext.web.openapi.RouterBuilder;
 import io.vertx.ext.web.validation.RequestParameters;
 import io.vertx.ext.web.validation.RequestParameter;
 import io.vertx.ext.web.validation.ValidationHandler;
@@ -26,11 +26,11 @@ public StoreApiHandler() {
         this.apiImpl = new StoreApiImpl();
     }
 
-    public void mount(RouterFactory factory) {
-        factory.operation("deleteOrder").handler(this::deleteOrder);
-        factory.operation("getInventory").handler(this::getInventory);
-        factory.operation("getOrderById").handler(this::getOrderById);
-        factory.operation("placeOrder").handler(this::placeOrder);
+    public void mount(RouterBuilder builder) {
+        builder.operation("deleteOrder").handler(this::deleteOrder);
+        builder.operation("getInventory").handler(this::getInventory);
+        builder.operation("getOrderById").handler(this::getOrderById);
+        builder.operation("placeOrder").handler(this::placeOrder);
     }
 
     private void deleteOrder(RoutingContext routingContext) {
diff --git a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/UserApiHandler.java b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/UserApiHandler.java
index dfcbd41aef84..db26552844ef 100644
--- a/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/UserApiHandler.java
+++ b/samples/server/petstore/java-vertx-web/src/main/java/org/openapitools/vertxweb/server/api/UserApiHandler.java
@@ -4,7 +4,7 @@
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import io.vertx.core.json.jackson.DatabindCodec;
-import io.vertx.ext.web.openapi.RouterFactory;
+import io.vertx.ext.web.openapi.RouterBuilder;
 import io.vertx.ext.web.validation.RequestParameters;
 import io.vertx.ext.web.validation.RequestParameter;
 import io.vertx.ext.web.validation.ValidationHandler;
@@ -26,15 +26,15 @@ public UserApiHandler() {
         this.apiImpl = new UserApiImpl();
     }
 
-    public void mount(RouterFactory factory) {
-        factory.operation("createUser").handler(this::createUser);
-        factory.operation("createUsersWithArrayInput").handler(this::createUsersWithArrayInput);
-        factory.operation("createUsersWithListInput").handler(this::createUsersWithListInput);
-        factory.operation("deleteUser").handler(this::deleteUser);
-        factory.operation("getUserByName").handler(this::getUserByName);
-        factory.operation("loginUser").handler(this::loginUser);
-        factory.operation("logoutUser").handler(this::logoutUser);
-        factory.operation("updateUser").handler(this::updateUser);
+    public void mount(RouterBuilder builder) {
+        builder.operation("createUser").handler(this::createUser);
+        builder.operation("createUsersWithArrayInput").handler(this::createUsersWithArrayInput);
+        builder.operation("createUsersWithListInput").handler(this::createUsersWithListInput);
+        builder.operation("deleteUser").handler(this::deleteUser);
+        builder.operation("getUserByName").handler(this::getUserByName);
+        builder.operation("loginUser").handler(this::loginUser);
+        builder.operation("logoutUser").handler(this::logoutUser);
+        builder.operation("updateUser").handler(this::updateUser);
     }
 
     private void createUser(RoutingContext routingContext) {