diff --git a/mqtt-broker/pom.xml b/mqtt-broker/pom.xml
index 6e93eb65..3d32402a 100644
--- a/mqtt-broker/pom.xml
+++ b/mqtt-broker/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>pulsar-protocol-handler-mqtt-parent</artifactId>
         <groupId>io.streamnative.pulsar.handlers</groupId>
-        <version>4.2.0-SNAPSHOT</version>
+        <version>4.2.1.9</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>pulsar-protocol-handler-mqtt</artifactId>
diff --git a/mqtt-common/pom.xml b/mqtt-common/pom.xml
index d1ef745e..145605af 100644
--- a/mqtt-common/pom.xml
+++ b/mqtt-common/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>pulsar-protocol-handler-mqtt-parent</artifactId>
         <groupId>io.streamnative.pulsar.handlers</groupId>
-        <version>4.2.0-SNAPSHOT</version>
+        <version>4.2.1.9</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>pulsar-protocol-handler-mqtt-common</artifactId>
diff --git a/mqtt-proxy/pom.xml b/mqtt-proxy/pom.xml
index 80706090..6d404158 100644
--- a/mqtt-proxy/pom.xml
+++ b/mqtt-proxy/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>pulsar-protocol-handler-mqtt-parent</artifactId>
         <groupId>io.streamnative.pulsar.handlers</groupId>
-        <version>4.2.0-SNAPSHOT</version>
+        <version>4.2.1.9</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>pulsar-protocol-handler-mqtt-proxy</artifactId>
diff --git a/pom.xml b/pom.xml
index 500f4e08..79d870fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -19,7 +19,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <groupId>io.streamnative.pulsar.handlers</groupId>
     <artifactId>pulsar-protocol-handler-mqtt-parent</artifactId>
-    <version>4.2.0-SNAPSHOT</version>
+    <version>4.2.1.9</version>
     <name>StreamNative :: Pulsar Protocol Handler :: MoP Parent</name>
     <description>Parent for MQTT on Pulsar implemented using Pulsar Protocol Handler.</description>
 
@@ -51,8 +51,8 @@
         <mockito.version>2.22.0</mockito.version>
         <testng.version>6.14.3</testng.version>
         <awaitility.version>4.0.2</awaitility.version>
-        <pulsar.version>4.2.0-SNAPSHOT</pulsar.version>
-        <sn.bom.version>4.2.0-SNAPSHOT</sn.bom.version>
+        <pulsar.version>4.2.1.9</pulsar.version>
+        <sn.bom.version>4.2.1.9</sn.bom.version>
         <log4j2.version>2.18.0</log4j2.version>
         <fusesource.client.version>1.16</fusesource.client.version>
         <hivemq.mqtt.client.version>1.2.2</hivemq.mqtt.client.version>
@@ -71,7 +71,6 @@
         <maven-checkstyle-plugin.version>3.1.2</maven-checkstyle-plugin.version>
         <spotbugs-maven-plugin.version>3.1.8</spotbugs-maven-plugin.version>
         <maven-jacoco-plugin.version>0.8.7</maven-jacoco-plugin.version>
-        <opentelemetry.version>1.56.0</opentelemetry.version>
     </properties>
 
     <dependencies>
@@ -126,11 +125,6 @@
             <groupId>dev.cel</groupId>
             <artifactId>cel</artifactId>
         </dependency>
-        <dependency>
-            <groupId>io.opentelemetry</groupId>
-            <artifactId>opentelemetry-sdk-extension-autoconfigure-spi</artifactId>
-            <version>${opentelemetry.version}</version>
-        </dependency>
     </dependencies>
 
     <dependencyManagement>
diff --git a/tests/pom.xml b/tests/pom.xml
index d2ef8e74..b37cf562 100644
--- a/tests/pom.xml
+++ b/tests/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>pulsar-protocol-handler-mqtt-parent</artifactId>
         <groupId>io.streamnative.pulsar.handlers</groupId>
-        <version>4.2.0-SNAPSHOT</version>
+        <version>4.2.1.9</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>pulsar-protocol-handler-mqtt-tests</artifactId>
@@ -81,12 +81,6 @@
             <version>${hivemq.mqtt.client.version}</version>
             <scope>test</scope>
         </dependency>
-        <dependency>
-            <groupId>io.opentelemetry</groupId>
-            <artifactId>opentelemetry-sdk-extension-autoconfigure-spi</artifactId>
-            <version>${opentelemetry.version}</version>
-            <scope>test</scope>
-        </dependency>
     </dependencies>
 
     <build>
@@ -118,4 +112,4 @@
             <url>https://repo.eclipse.org/content/repositories/paho-releases/</url>
         </repository>
     </repositories>
-</project>
\ No newline at end of file
+</project>