Update XZ for Java dependency
diff --git a/pom.xml b/pom.xml
index 09e4af1..1d54ef0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -88,7 +88,7 @@
     <dependency>
       <groupId>org.tukaani</groupId>
       <artifactId>xz</artifactId>
-      <version>1.6</version>
+      <version>1.8</version>
       <optional>true</optional>
     </dependency>
     <dependency>