diff --git a/boot/pom.xml b/boot/pom.xml
index 343c3f3f..21886bed 100644
--- a/boot/pom.xml
+++ b/boot/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>boot</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/event/pom.xml b/event/pom.xml
index f432886d..2851468c 100644
--- a/event/pom.xml
+++ b/event/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>event</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/hotswap/pom.xml b/hotswap/pom.xml
index eb534db4..500cbdec 100644
--- a/hotswap/pom.xml
+++ b/hotswap/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>hotswap</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/monitor/pom.xml b/monitor/pom.xml
index 2e01632c..dcc60111 100644
--- a/monitor/pom.xml
+++ b/monitor/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>monitor</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/net/pom.xml b/net/pom.xml
index f139ff41..ae8fc189 100644
--- a/net/pom.xml
+++ b/net/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>net</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/orm/pom.xml b/orm/pom.xml
index 07df2060..d6ccdf05 100644
--- a/orm/pom.xml
+++ b/orm/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>orm</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/pom.xml b/pom.xml
index 3dd2b9cc..edd9b8bc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,12 +4,11 @@
          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>
 
-
     <groupId>com.zfoo</groupId>
     <artifactId>zfoo</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>pom</packaging>
+    <version>3.1.2</version>
+
 
     <name>zfoo</name>
     <description>The root project of zfoo</description>
diff --git a/protocol/pom.xml b/protocol/pom.xml
index c61e129f..347701e8 100644
--- a/protocol/pom.xml
+++ b/protocol/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>protocol</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/scheduler/pom.xml b/scheduler/pom.xml
index c2de8846..1958ca24 100644
--- a/scheduler/pom.xml
+++ b/scheduler/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>scheduler</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>
diff --git a/storage/pom.xml b/storage/pom.xml
index 34710e20..b132c641 100644
--- a/storage/pom.xml
+++ b/storage/pom.xml
@@ -6,9 +6,8 @@
 
     <groupId>com.zfoo</groupId>
     <artifactId>storage</artifactId>
-    <version>${zfoo.version}</version>
-
     <packaging>jar</packaging>
+    <version>3.1.2</version>
 
     <properties>
         <zfoo.version>3.1.2</zfoo.version>