diff --git a/pom.xml b/pom.xml
index c65e6c9..ff7d252 100644
--- a/pom.xml
+++ b/pom.xml
@@ -95,40 +95,40 @@
  </profiles>
 
  <dependencies>
-<dependency>
+  <dependency>
   	<groupId>io.netty</groupId>
   	<artifactId>netty-buffer</artifactId>
-  	<version>4.1.16.Final</version>
+  	<version>4.1.21.Final</version>
   </dependency>
   <dependency>
   	<groupId>io.netty</groupId>
   	<artifactId>netty-common</artifactId>
-  	<version>4.1.16.Final</version>
+  	<version>4.1.21.Final</version>
   </dependency>
   <dependency>
   	<groupId>io.netty</groupId>
   	<artifactId>netty-transport</artifactId>
-       <version>4.1.16.Final</version>
+       <version>4.1.21.Final</version>
   </dependency>
   <dependency>
   	<groupId>io.netty</groupId>
   	<artifactId>netty-handler</artifactId>
-  	<version>4.1.16.Final</version>
+  	<version>4.1.21.Final</version>
   </dependency>
   <dependency>
   	<groupId>io.netty</groupId>
   	<artifactId>netty-codec-http</artifactId>
-  	<version>4.1.16.Final</version>
+  	<version>4.1.21.Final</version>
   </dependency>
   <dependency>
   	<groupId>io.netty</groupId>
   	<artifactId>netty-codec</artifactId>
-  	<version>4.1.16.Final</version>
+  	<version>4.1.21.Final</version>
   </dependency>
   <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.16.Final</version>
+        <version>4.1.21.Final</version>
   </dependency>
   
   <dependency>
@@ -153,12 +153,12 @@
   <dependency>
   	<groupId>com.fasterxml.jackson.core</groupId>
   	<artifactId>jackson-core</artifactId>
-  	<version>2.7.4</version>
+  	<version>2.7.9</version>
   </dependency>
   <dependency>
   	<groupId>com.fasterxml.jackson.core</groupId>
   	<artifactId>jackson-databind</artifactId>
-  	<version>2.7.4</version>
+  	<version>2.7.9.2</version>
   </dependency>
 
 
@@ -185,7 +185,7 @@
     <dependency>
         <groupId>org.redisson</groupId>
         <artifactId>redisson</artifactId>
-        <version>2.10.5</version>
+        <version>2.11.0</version>
         <scope>provided</scope>
     </dependency>
     <dependency>