diff --git a/spatial/pom.xml b/spatial/pom.xml
index 6fd56a0a2..97bbb58b9 100644
--- a/spatial/pom.xml
+++ b/spatial/pom.xml
@@ -135,7 +135,7 @@
             <dependency>
                 <groupId>com.thoughtworks.xstream</groupId>
                 <artifactId>xstream</artifactId>
-                <version>1.4.4</version>
+                <version>1.4.18</version>
             </dependency>
             <dependency>
                 <groupId>org.jvnet.jaxb2_commons</groupId>