diff --git a/android/pom.xml b/android/pom.xml
index f32ef83..ec8ac10 100644
--- a/android/pom.xml
+++ b/android/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <artifactId>qrgen-parent</artifactId>
         <groupId>net.glxn.qrgen</groupId>
-        <version>2.2-SNAPSHOT</version>
+        <version>2.1.0</version>
     </parent>
     <artifactId>android</artifactId>
     <packaging>jar</packaging>
diff --git a/core/pom.xml b/core/pom.xml
index 8ce95a2..40cd63a 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>net.glxn.qrgen</groupId>
         <artifactId>qrgen-parent</artifactId>
-        <version>2.2-SNAPSHOT</version>
+        <version>2.1.0</version>
     </parent>
 
     <artifactId>core</artifactId>
diff --git a/javase/pom.xml b/javase/pom.xml
index 2fbe5bb..b340912 100644
--- a/javase/pom.xml
+++ b/javase/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>net.glxn.qrgen</groupId>
         <artifactId>qrgen-parent</artifactId>
-        <version>2.2-SNAPSHOT</version>
+        <version>2.1.0</version>
     </parent>
 
     <artifactId>javase</artifactId>
diff --git a/pom.xml b/pom.xml
index ebd807b..48ba5e5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 
     <groupId>net.glxn.qrgen</groupId>
     <artifactId>qrgen-parent</artifactId>
-    <version>2.2-SNAPSHOT</version>
+    <version>2.1.0</version>
     <packaging>pom</packaging>
     <name>QRGen-parent</name>
     <description>a simple QRCode generation api for java built on top ZXING</description>