diff --git a/core/shirako/pom.xml b/core/shirako/pom.xml
index 535cf591..e65b2ec3 100644
--- a/core/shirako/pom.xml
+++ b/core/shirako/pom.xml
@@ -45,7 +45,7 @@
 		<dependency>
 			<groupId>com.thoughtworks.xstream</groupId>
 			<artifactId>xstream</artifactId>
-			<version>1.4.11</version>
+			<version>1.4.19</version>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.xmlrpc</groupId>