diff --git a/geoxygene-appli/pom.xml b/geoxygene-appli/pom.xml
index 31cb21009..ed7a30369 100644
--- a/geoxygene-appli/pom.xml
+++ b/geoxygene-appli/pom.xml
@@ -431,7 +431,7 @@
 		<dependency>
 			<groupId>com.thoughtworks.xstream</groupId>
 			<artifactId>xstream</artifactId>
-			<version>1.4.19</version>
+			<version>1.4.21</version>
 		</dependency>
 
 		<dependency>