diff --git a/client/pom.xml b/client/pom.xml
index 9bfbd404..ce65011d 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -1,4 +1,4 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" ">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" ">
 	<modelVersion>4.0.0</modelVersion>
 	<parent>
 		<groupId>com.alibaba.otter</groupId>
diff --git a/pom.xml b/pom.xml
index 3805c8d3..a12cb78c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -225,7 +225,7 @@
             <dependency>
                 <groupId>com.google.guava</groupId>
                 <artifactId>guava</artifactId>
-                <version>18.0</version>
+                <version>22.0</version>
             </dependency>
             <dependency>
                 <groupId>com.googlecode.aviator</groupId>