diff --git a/liteflow-core/pom.xml b/liteflow-core/pom.xml
index d50cadb03..761528291 100644
--- a/liteflow-core/pom.xml
+++ b/liteflow-core/pom.xml
@@ -9,7 +9,7 @@
     <parent>
 		<groupId>com.yomahub</groupId>
 		<artifactId>liteflow</artifactId>
-		<version>2.2.0</version>
+		<version>2.2.1</version>
 	</parent>
 
 	<dependencies>
diff --git a/liteflow-spring-boot-starter/pom.xml b/liteflow-spring-boot-starter/pom.xml
index 849e48192..4c270e19a 100644
--- a/liteflow-spring-boot-starter/pom.xml
+++ b/liteflow-spring-boot-starter/pom.xml
@@ -10,7 +10,7 @@
     <parent>
         <artifactId>liteflow</artifactId>
         <groupId>com.yomahub</groupId>
-        <version>2.2.0</version>
+        <version>2.2.1</version>
     </parent>
 
     <dependencies>
diff --git a/liteflow-test-spring/pom.xml b/liteflow-test-spring/pom.xml
index 437436961..779ce38ac 100644
--- a/liteflow-test-spring/pom.xml
+++ b/liteflow-test-spring/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <artifactId>liteflow</artifactId>
         <groupId>com.yomahub</groupId>
-        <version>2.2.0</version>
+        <version>2.2.1</version>
     </parent>
 
     <dependencies>
diff --git a/liteflow-test-springboot/pom.xml b/liteflow-test-springboot/pom.xml
index bdc3ff387..974e5d3cc 100644
--- a/liteflow-test-springboot/pom.xml
+++ b/liteflow-test-springboot/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <artifactId>liteflow</artifactId>
         <groupId>com.yomahub</groupId>
-        <version>2.2.0</version>
+        <version>2.2.1</version>
     </parent>
 
     <dependencyManagement>
diff --git a/pom.xml b/pom.xml
index 4971972ca..d8aab448b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 	<groupId>com.yomahub</groupId>
     <artifactId>liteflow</artifactId>
     <packaging>pom</packaging>
-    <version>2.2.0</version>
+    <version>2.2.1</version>
 	<name>liteflow</name>
 	<description>a lightweight and practical micro-process framework</description>
 	<url>https://github.com/bryan31/liteflow</url>
@@ -50,7 +50,7 @@
 		<log4j.version>1.2.17</log4j.version>
 		<log4j-slf4j.version>1.7.5</log4j-slf4j.version>
 		<slf4j.version>1.7.13</slf4j.version>
-		<fastjson.version>1.2.7</fastjson.version>
+		<fastjson.version>1.2.25</fastjson.version>
 		<dom4j.version>1.6.1</dom4j.version>
 		<curator.version>2.12.0</curator.version>
 		<junit.version>4.12</junit.version>