diff --git a/command/pom.xml b/command/pom.xml
index 2b1b5906..0e07fa35 100644
--- a/command/pom.xml
+++ b/command/pom.xml
@@ -16,13 +16,11 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>dledger-all</artifactId>
         <groupId>io.openmessaging.storage</groupId>
-        <version>0.2.8-SNAPSHOT</version>
+        <version>0.3.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/dledger/pom.xml b/dledger/pom.xml
index 4267ac92..bf65dcc5 100644
--- a/dledger/pom.xml
+++ b/dledger/pom.xml
@@ -16,13 +16,11 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>dledger-all</artifactId>
         <groupId>io.openmessaging.storage</groupId>
-        <version>0.2.8-SNAPSHOT</version>
+        <version>0.3.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index c71aaf19..48c41a0c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,9 +16,7 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
@@ -29,7 +27,7 @@
 
     <groupId>io.openmessaging.storage</groupId>
     <artifactId>dledger-all</artifactId>
-    <version>0.2.8-SNAPSHOT</version>
+    <version>0.3.0</version>
 
     <packaging>pom</packaging>
 
diff --git a/proxy/pom.xml b/proxy/pom.xml
index 052fafcc..aeafc294 100644
--- a/proxy/pom.xml
+++ b/proxy/pom.xml
@@ -1,9 +1,8 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>dledger-all</artifactId>
         <groupId>io.openmessaging.storage</groupId>
-        <version>0.2.8-SNAPSHOT</version>
+        <version>0.3.0</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>