diff --git a/pom.xml b/pom.xml
index 8c973e20..06e7c37a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.vertx</groupId>
     <artifactId>vertx5-parent</artifactId>
-    <version>3</version>
+    <version>4</version>
   </parent>
 
   <artifactId>vertx-kafka-client</artifactId>
@@ -56,12 +56,17 @@
 
     <dependency>
       <groupId>io.vertx</groupId>
-      <artifactId>vertx-codegen</artifactId>
+      <artifactId>vertx-codegen-api</artifactId>
       <optional>true</optional>
     </dependency>
     <dependency>
       <groupId>io.vertx</groupId>
-      <artifactId>vertx-docgen</artifactId>
+      <artifactId>vertx-codegen-json</artifactId>
+      <optional>true</optional>
+    </dependency>
+    <dependency>
+      <groupId>io.vertx</groupId>
+      <artifactId>vertx-docgen-api</artifactId>
       <optional>true</optional>
     </dependency>
     <dependency>
@@ -127,12 +132,19 @@
           <executions>
             <execution>
               <id>default-compile</id>
-              <phase>compile</phase>
               <configuration>
-                <annotationProcessors>
-                  <annotationProcessor>io.vertx.codegen.CodeGenProcessor</annotationProcessor>
-                  <annotationProcessor>io.vertx.docgen.JavaDocGenProcessor</annotationProcessor>
-                </annotationProcessors>
+                <annotationProcessorPaths>
+                  <annotationProcessorPath>
+                    <groupId>io.vertx</groupId>
+                    <artifactId>vertx-codegen</artifactId>
+                    <classifier>processor</classifier>
+                  </annotationProcessorPath>
+                  <annotationProcessorPath>
+                    <groupId>io.vertx</groupId>
+                    <artifactId>vertx-docgen-processor</artifactId>
+                    <classifier>processor</classifier>
+                  </annotationProcessorPath>
+                </annotationProcessorPaths>
               </configuration>
             </execution>
           </executions>
diff --git a/src/main/generated/io/vertx/kafka/admin/ClusterDescriptionConverter.java b/src/main/generated/io/vertx/kafka/admin/ClusterDescriptionConverter.java
index 253d1415..2033313b 100644
--- a/src/main/generated/io/vertx/kafka/admin/ClusterDescriptionConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ClusterDescriptionConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ClusterDescriptionConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ClusterDescription obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/ConfigConverter.java b/src/main/generated/io/vertx/kafka/admin/ConfigConverter.java
index bb886a43..a7b51e36 100644
--- a/src/main/generated/io/vertx/kafka/admin/ConfigConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ConfigConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ConfigConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, Config obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/ConfigEntryConverter.java b/src/main/generated/io/vertx/kafka/admin/ConfigEntryConverter.java
index c1d6867c..a8eae36d 100644
--- a/src/main/generated/io/vertx/kafka/admin/ConfigEntryConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ConfigEntryConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ConfigEntryConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ConfigEntry obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/ConfigSynonymConverter.java b/src/main/generated/io/vertx/kafka/admin/ConfigSynonymConverter.java
index a967d3b6..ddf6a9a6 100644
--- a/src/main/generated/io/vertx/kafka/admin/ConfigSynonymConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ConfigSynonymConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ConfigSynonymConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ConfigSynonym obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/ConsumerGroupDescriptionConverter.java b/src/main/generated/io/vertx/kafka/admin/ConsumerGroupDescriptionConverter.java
index 8b019a17..2436ab95 100644
--- a/src/main/generated/io/vertx/kafka/admin/ConsumerGroupDescriptionConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ConsumerGroupDescriptionConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ConsumerGroupDescriptionConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ConsumerGroupDescription obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/ConsumerGroupListingConverter.java b/src/main/generated/io/vertx/kafka/admin/ConsumerGroupListingConverter.java
index 07e09858..cca9a36b 100644
--- a/src/main/generated/io/vertx/kafka/admin/ConsumerGroupListingConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ConsumerGroupListingConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ConsumerGroupListingConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ConsumerGroupListing obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/DescribeClusterOptionsConverter.java b/src/main/generated/io/vertx/kafka/admin/DescribeClusterOptionsConverter.java
index f4a3437c..8f51f182 100644
--- a/src/main/generated/io/vertx/kafka/admin/DescribeClusterOptionsConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/DescribeClusterOptionsConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class DescribeClusterOptionsConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, DescribeClusterOptions obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/DescribeConsumerGroupsOptionsConverter.java b/src/main/generated/io/vertx/kafka/admin/DescribeConsumerGroupsOptionsConverter.java
index fb1d3950..d34b6387 100644
--- a/src/main/generated/io/vertx/kafka/admin/DescribeConsumerGroupsOptionsConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/DescribeConsumerGroupsOptionsConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class DescribeConsumerGroupsOptionsConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, DescribeConsumerGroupsOptions obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/DescribeTopicsOptionsConverter.java b/src/main/generated/io/vertx/kafka/admin/DescribeTopicsOptionsConverter.java
index 095e8129..ec6b19b2 100644
--- a/src/main/generated/io/vertx/kafka/admin/DescribeTopicsOptionsConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/DescribeTopicsOptionsConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class DescribeTopicsOptionsConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, DescribeTopicsOptions obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/ListConsumerGroupOffsetsOptionsConverter.java b/src/main/generated/io/vertx/kafka/admin/ListConsumerGroupOffsetsOptionsConverter.java
index 92824e85..b1336b0f 100644
--- a/src/main/generated/io/vertx/kafka/admin/ListConsumerGroupOffsetsOptionsConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ListConsumerGroupOffsetsOptionsConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ListConsumerGroupOffsetsOptionsConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ListConsumerGroupOffsetsOptions obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/ListOffsetsResultInfoConverter.java b/src/main/generated/io/vertx/kafka/admin/ListOffsetsResultInfoConverter.java
index 5b82b196..671faf3e 100644
--- a/src/main/generated/io/vertx/kafka/admin/ListOffsetsResultInfoConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/ListOffsetsResultInfoConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ListOffsetsResultInfoConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ListOffsetsResultInfo obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/MemberAssignmentConverter.java b/src/main/generated/io/vertx/kafka/admin/MemberAssignmentConverter.java
index c3d4aa56..821bfad3 100644
--- a/src/main/generated/io/vertx/kafka/admin/MemberAssignmentConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/MemberAssignmentConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class MemberAssignmentConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, MemberAssignment obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/MemberDescriptionConverter.java b/src/main/generated/io/vertx/kafka/admin/MemberDescriptionConverter.java
index 27a05993..fdc7eb54 100644
--- a/src/main/generated/io/vertx/kafka/admin/MemberDescriptionConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/MemberDescriptionConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class MemberDescriptionConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, MemberDescription obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/NewPartitionsConverter.java b/src/main/generated/io/vertx/kafka/admin/NewPartitionsConverter.java
index cb37234e..4ef815c8 100644
--- a/src/main/generated/io/vertx/kafka/admin/NewPartitionsConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/NewPartitionsConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class NewPartitionsConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, NewPartitions obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/NewTopicConverter.java b/src/main/generated/io/vertx/kafka/admin/NewTopicConverter.java
index 2e60e8aa..d2351eac 100644
--- a/src/main/generated/io/vertx/kafka/admin/NewTopicConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/NewTopicConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class NewTopicConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, NewTopic obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/OffsetSpecConverter.java b/src/main/generated/io/vertx/kafka/admin/OffsetSpecConverter.java
index f013bfff..5e4cac96 100644
--- a/src/main/generated/io/vertx/kafka/admin/OffsetSpecConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/OffsetSpecConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class OffsetSpecConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, OffsetSpec obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/admin/TopicDescriptionConverter.java b/src/main/generated/io/vertx/kafka/admin/TopicDescriptionConverter.java
index 371c4bd5..3e0a63b9 100644
--- a/src/main/generated/io/vertx/kafka/admin/TopicDescriptionConverter.java
+++ b/src/main/generated/io/vertx/kafka/admin/TopicDescriptionConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class TopicDescriptionConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, TopicDescription obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/client/common/ConfigResourceConverter.java b/src/main/generated/io/vertx/kafka/client/common/ConfigResourceConverter.java
index 46edd9fe..c22468e5 100644
--- a/src/main/generated/io/vertx/kafka/client/common/ConfigResourceConverter.java
+++ b/src/main/generated/io/vertx/kafka/client/common/ConfigResourceConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class ConfigResourceConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, ConfigResource obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/client/common/KafkaClientOptionsConverter.java b/src/main/generated/io/vertx/kafka/client/common/KafkaClientOptionsConverter.java
index 9084729d..f5cd5573 100644
--- a/src/main/generated/io/vertx/kafka/client/common/KafkaClientOptionsConverter.java
+++ b/src/main/generated/io/vertx/kafka/client/common/KafkaClientOptionsConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class KafkaClientOptionsConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, KafkaClientOptions obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/client/common/PartitionInfoConverter.java b/src/main/generated/io/vertx/kafka/client/common/PartitionInfoConverter.java
index 5430595d..870df28a 100644
--- a/src/main/generated/io/vertx/kafka/client/common/PartitionInfoConverter.java
+++ b/src/main/generated/io/vertx/kafka/client/common/PartitionInfoConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class PartitionInfoConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, PartitionInfo obj) {
     for (java.util.Map.Entry<String, Object> member : json) {
diff --git a/src/main/generated/io/vertx/kafka/client/common/TopicPartitionInfoConverter.java b/src/main/generated/io/vertx/kafka/client/common/TopicPartitionInfoConverter.java
index 4e4c7d28..ff70c556 100644
--- a/src/main/generated/io/vertx/kafka/client/common/TopicPartitionInfoConverter.java
+++ b/src/main/generated/io/vertx/kafka/client/common/TopicPartitionInfoConverter.java
@@ -2,7 +2,6 @@
 
 import io.vertx.core.json.JsonObject;
 import io.vertx.core.json.JsonArray;
-import io.vertx.core.json.impl.JsonUtil;
 import java.time.Instant;
 import java.time.format.DateTimeFormatter;
 import java.util.Base64;
@@ -13,9 +12,8 @@
  */
 public class TopicPartitionInfoConverter {
 
-
-  private static final Base64.Decoder BASE64_DECODER = JsonUtil.BASE64_DECODER;
-  private static final Base64.Encoder BASE64_ENCODER = JsonUtil.BASE64_ENCODER;
+  private static final Base64.Decoder BASE64_DECODER = Base64.getUrlDecoder();
+  private static final Base64.Encoder BASE64_ENCODER = Base64.getUrlEncoder().withoutPadding();
 
    static void fromJson(Iterable<java.util.Map.Entry<String, Object>> json, TopicPartitionInfo obj) {
     for (java.util.Map.Entry<String, Object> member : json) {