diff --git a/sit-wt-runtime/pom.xml b/sit-wt-runtime/pom.xml
index d905b3ae..f10750e5 100644
--- a/sit-wt-runtime/pom.xml
+++ b/sit-wt-runtime/pom.xml
@@ -29,7 +29,7 @@
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-compress</artifactId>
-      <version>1.19</version>
+      <version>1.21</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>