improve version to 2.1.2
diff --git a/hugegraph-common/pom.xml b/hugegraph-common/pom.xml
index 4b0d7ad..2f6a818 100644
--- a/hugegraph-common/pom.xml
+++ b/hugegraph-common/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.baidu.hugegraph</groupId>
         <artifactId>hugegraph-commons</artifactId>
-        <version>2.1.1</version>
+        <version>2.1.2</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java b/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
index 5aa53b9..e75c183 100644
--- a/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
+++ b/hugegraph-common/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
@@ -27,5 +27,5 @@
 
     // The second parameter of Version.of() is for all-in-one JAR
     public static final Version VERSION = Version.of(CommonVersion.class,
-                                                     "2.1.1");
+                                                     "2.1.2");
 }
diff --git a/hugegraph-rpc/pom.xml b/hugegraph-rpc/pom.xml
index 398ef9a..06dded6 100644
--- a/hugegraph-rpc/pom.xml
+++ b/hugegraph-rpc/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>com.baidu.hugegraph</groupId>
         <artifactId>hugegraph-commons</artifactId>
-        <version>2.1.1</version>
+        <version>2.1.2</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 
diff --git a/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java b/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java
index df465ca..5faee27 100644
--- a/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java
+++ b/hugegraph-rpc/src/main/java/com/baidu/hugegraph/version/RpcVersion.java
@@ -27,5 +27,5 @@
 
     // The second parameter of Version.of() is for all-in-one JAR
     public static final Version VERSION = Version.of(RpcVersion.class,
-                                                     "2.1.1");
+                                                     "2.1.2");
 }
diff --git a/pom.xml b/pom.xml
index 0511809..cee98a5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.baidu.hugegraph</groupId>
     <artifactId>hugegraph-commons</artifactId>
-    <version>2.1.1</version>
+    <version>2.1.2</version>
     <packaging>pom</packaging>
 
     <name>hugegraph-commons</name>
@@ -75,7 +75,7 @@
         <mockito.version>4.1.0</mockito.version>
         <jakarta.xml.version>4.0.0-RC2</jakarta.xml.version>
         <sun.xml.version>3.0.2</sun.xml.version>
-        <implementation.version>2.1.1.0</implementation.version>
+        <implementation.version>2.1.2.0</implementation.version>
     </properties>
 
     <modules>