The jib format version is defined in jib-profiles.js. It is used by Jib to identify correct parsing of the file and adjust behavior of Jib if necessary. This version needs to be bumped to 1.2. Bug: https://bugs.openjdk.java.net/browse/JDK-8203497 Webrev: http://cr.openjdk.java.net/~erikj/8203497/webrev.01/ /Erik