diff --git a/example/kafka/pom.xml b/example/kafka/pom.xml
index 04c899da9cc..5e0c2f26791 100644
--- a/example/kafka/pom.xml
+++ b/example/kafka/pom.xml
@@ -29,7 +29,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>iotdb-examples</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>kafka-example</artifactId>
diff --git a/example/pom.xml b/example/pom.xml
index 70c9a909f12..152023f72ea 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <packaging>pom</packaging>
diff --git a/example/rocketmq/pom.xml b/example/rocketmq/pom.xml
index 28664ca6172..4806ff14f2b 100644
--- a/example/rocketmq/pom.xml
+++ b/example/rocketmq/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>iotdb-examples</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>rocketmq-example</artifactId>
diff --git a/grafana/pom.xml b/grafana/pom.xml
index 9dd1c0111d2..c669357b217 100644
--- a/grafana/pom.xml
+++ b/grafana/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <!--parent>
@@ -61,7 +61,7 @@
         <dependency>
             <groupId>org.apache.iotdb</groupId>
             <artifactId>iotdb-jdbc</artifactId>
-            <version>0.8.0-SNAPSHOT</version>
+            <version>0.9.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
diff --git a/iotdb-cli/pom.xml b/iotdb-cli/pom.xml
index a6634e5c31d..22763806b33 100644
--- a/iotdb-cli/pom.xml
+++ b/iotdb-cli/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>iotdb-cli</artifactId>
@@ -41,7 +41,7 @@
         <dependency>
             <groupId>org.apache.iotdb</groupId>
             <artifactId>iotdb-jdbc</artifactId>
-            <version>0.8.0-SNAPSHOT</version>
+            <version>0.9.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>commons-cli</groupId>
diff --git a/iotdb/pom.xml b/iotdb/pom.xml
index 44fb7d2dbdd..880b69410cf 100644
--- a/iotdb/pom.xml
+++ b/iotdb/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>iotdb</artifactId>
diff --git a/jdbc/pom.xml b/jdbc/pom.xml
index e3dcc1a712e..8db8f17c610 100644
--- a/jdbc/pom.xml
+++ b/jdbc/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>iotdb-jdbc</artifactId>
@@ -39,12 +39,12 @@
         <dependency>
             <groupId>org.apache.iotdb</groupId>
             <artifactId>tsfile</artifactId>
-            <version>0.8.0-SNAPSHOT</version>
+            <version>0.9.0-SNAPSHOT</version>
         </dependency>
         <dependency>
             <groupId>org.apache.iotdb</groupId>
             <artifactId>service-rpc</artifactId>
-            <version>0.8.0-SNAPSHOT</version>
+            <version>0.9.0-SNAPSHOT</version>
         </dependency>
     </dependencies>
     <build>
diff --git a/pom.xml b/pom.xml
index 359b9737bb3..2326bbce1ff 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
     </parent>
     <groupId>org.apache.iotdb</groupId>
     <artifactId>root</artifactId>
-    <version>0.8.0-SNAPSHOT</version>
+    <version>0.9.0-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>IoTDB Root</name>
     <description>This is the top level project that builds, packages the tsfile, iotdb engine, jdbc, and integration libs.</description>
@@ -42,7 +42,7 @@
         <connection>scm:git:https://github.com/apache/incubator-iotdb.git</connection>
         <developerConnection>scm:git:https://github.com/apache/incubator-iotdb.git</developerConnection>
         <url>https://github.com/apache/incubator-iotdb</url>
-      <tag>rel/0.8</tag>
+      <tag>HEAD</tag>
   </scm>
     <!-- Properties Management -->
     <properties>
diff --git a/service-rpc/pom.xml b/service-rpc/pom.xml
index 2fabed22fd6..f6d5cae20f1 100644
--- a/service-rpc/pom.xml
+++ b/service-rpc/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>service-rpc</artifactId>
diff --git a/spark/pom.xml b/spark/pom.xml
index 770ae0e0d4f..e4e45ccdbae 100644
--- a/spark/pom.xml
+++ b/spark/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <groupId>org.apache.iotdb</groupId>
diff --git a/tsfile/pom.xml b/tsfile/pom.xml
index cf92988a7d6..eb2bcc3be28 100644
--- a/tsfile/pom.xml
+++ b/tsfile/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.iotdb</groupId>
         <artifactId>root</artifactId>
-        <version>0.8.0-SNAPSHOT</version>
+        <version>0.9.0-SNAPSHOT</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
     <artifactId>tsfile</artifactId>