diff --git a/pom.xml b/pom.xml
index c403f62..fd06874 100644
--- a/pom.xml
+++ b/pom.xml
@@ -20,6 +20,7 @@
     <url>https://github.com/zhyea/wordpress-client</url>
 
     <properties>
+        <jackson.version>2.9.8</jackson.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -29,20 +30,11 @@
             <artifactId>xmlrpc-client</artifactId>
             <version>3.1.3</version>
         </dependency>
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-core</artifactId>
-            <version>2.9.7</version>
-        </dependency>
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-annotations</artifactId>
-            <version>2.9.7</version>
-        </dependency>
+
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.9.7</version>
+            <version>${jackson.version}</version>
         </dependency>
 
         <dependency>