https://github.com/apache/openwhisk-devtools/blob/5801dc226ddbae7bea2752991dbb0d5e2884dc8f/knative-build/runtimes/java/WhiskSim/pom.xml#L53 See https://www.apache.org/legal/resolved.html (JSON license section) Could you upgrade to a newer version? And these versions have security fixes too. Since late 2022, this jar is now properly in the public domain.