diff --git a/taverna-server-webapp/pom.xml b/taverna-server-webapp/pom.xml
index 759d077..0ab95b9 100644
--- a/taverna-server-webapp/pom.xml
+++ b/taverna-server-webapp/pom.xml
@@ -308,7 +308,7 @@ limitations under the License.
 		<dependency>
 			<groupId>org.codehaus.jettison</groupId>
 			<artifactId>jettison</artifactId>
-			<version>1.3.7</version>
+			<version>1.5.4</version>
 			<scope>runtime</scope>
 		</dependency>
 		<dependency>