diff --git a/formats/protobuf/pom.xml b/formats/protobuf/pom.xml
index 50571d02c..e76c935f1 100644
--- a/formats/protobuf/pom.xml
+++ b/formats/protobuf/pom.xml
@@ -32,7 +32,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <protobuf.version>3.15.0</protobuf.version>
+        <protobuf.version>3.21.10</protobuf.version>
         <module-name>io.cloudevents.formats.protobuf</module-name>
     </properties>
 
diff --git a/http/vertx/pom.xml b/http/vertx/pom.xml
index 6ff546a1d..b02269757 100644
--- a/http/vertx/pom.xml
+++ b/http/vertx/pom.xml
@@ -31,7 +31,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <vertx.version>4.2.5</vertx.version>
+        <vertx.version>4.3.6</vertx.version>
         <module-name>io.cloudevents.http.vertx</module-name>
     </properties>
 
diff --git a/kafka/pom.xml b/kafka/pom.xml
index c301ef720..e4309f781 100644
--- a/kafka/pom.xml
+++ b/kafka/pom.xml
@@ -31,7 +31,7 @@
     <packaging>jar</packaging>
 
     <properties>
-        <kafka.version>2.5.0</kafka.version>
+        <kafka.version>3.0.0</kafka.version>
         <module-name>io.cloudevents.kafka</module-name>
     </properties>
 
diff --git a/pom.xml b/pom.xml
index c959a6441..6be267b78 100644
--- a/pom.xml
+++ b/pom.xml
@@ -165,7 +165,7 @@
                     <links>
                         <link>https://docs.spring.io/spring-framework/docs/current/javadoc-api/</link>
                         <link>https://jakarta.ee/specifications/platform/8/apidocs/</link>
-                        <link>https://kafka.apache.org/25/javadoc/</link>
+                        <link>https://kafka.apache.org/30/javadoc/</link>
                         <link>https://qpid.apache.org/releases/qpid-proton-j-0.33.7/api/</link>
                         <link>https://fasterxml.github.io/jackson-databind/javadoc/2.10/</link>
                     </links>