diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 11a790f15..446f3ad0d
--- a/pom.xml
+++ b/pom.xml
@@ -178,7 +178,7 @@
                             <dependency>
                                 <groupId>com.thoughtworks.xstream</groupId>
                                 <artifactId>xstream</artifactId>
-                                <version>1.4.15</version>
+                                <version>1.4.19</version>
                             </dependency>
                         </dependencies>                        
                     </plugin>