diff --git a/pom.xml b/pom.xml
index bb3fb23..77d9e0f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -68,18 +68,18 @@
 		<dependency>
 			<groupId>junit</groupId>
 			<artifactId>junit</artifactId>
-			<version>4.12</version>
+			<version>4.13.1</version>
 			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>com.thoughtworks.xstream</groupId>
 			<artifactId>xstream</artifactId>
-			<version>1.4.9</version>
+			<version>1.4.21</version>
 		</dependency>
 		<dependency>
 			<groupId>com.google.guava</groupId>
 			<artifactId>guava</artifactId>
-			<version>25.1-jre</version>
+			<version>32.0.1-jre</version>
 		</dependency>
 		<dependency>
 			<groupId>com.mit</groupId>