diff --git a/pom.xml b/pom.xml
index c8b3206..291e65e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -99,7 +99,7 @@
         <dependency>
             <groupId>org.codehaus.jettison</groupId>
             <artifactId>jettison</artifactId>
-            <version>1.2</version>
+            <version>1.5.2</version>
         </dependency>
         <dependency>
             <groupId>com.vaadin.external.google</groupId>