diff --git a/android/pom.xml b/android/pom.xml
index 251abee..024a72c 100644
--- a/android/pom.xml
+++ b/android/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <artifactId>qrgen-parent</artifactId>
         <groupId>net.glxn.qrgen</groupId>
-        <version>2.2.0-SNAPSHOT</version>
+        <version>2.2.0</version>
     </parent>
     <artifactId>android</artifactId>
     <packaging>jar</packaging>
diff --git a/core/pom.xml b/core/pom.xml
index 5f41e2c..5532c5d 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <groupId>net.glxn.qrgen</groupId>
         <artifactId>qrgen-parent</artifactId>
-        <version>2.2.0-SNAPSHOT</version>
+        <version>2.2.0</version>
     </parent>
 
     <artifactId>core</artifactId>
diff --git a/javase/pom.xml b/javase/pom.xml
index 515a246..2af080a 100644
--- a/javase/pom.xml
+++ b/javase/pom.xml
@@ -6,7 +6,7 @@
     <parent>
         <groupId>net.glxn.qrgen</groupId>
         <artifactId>qrgen-parent</artifactId>
-        <version>2.2.0-SNAPSHOT</version>
+        <version>2.2.0</version>
     </parent>
 
     <artifactId>javase</artifactId>
diff --git a/pom.xml b/pom.xml
index 66bec72..5a79d98 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
 
     <groupId>net.glxn.qrgen</groupId>
     <artifactId>qrgen-parent</artifactId>
-    <version>2.2.0-SNAPSHOT</version>
+    <version>2.2.0</version>
     <packaging>pom</packaging>
     <name>QRGen-parent</name>
     <description>a simple QRCode generation api for java built on top ZXING</description>