Java 7 upgraded to JDK 7u79
Change effective on 15 April 2015
Heroku’s support for Java 7 has been upgraded to OpenJDK 7u79. This change affects all Java, Scala, Clojure, Groovy and JRuby applications with the following setting in their
This is a security release that will only take effect after your application’s next deployment, so it is strongly recommended that you redeploy at your earliest convenience.
Heroku’s Java 8 support remains at version 8u40 and is still the default version when a
system.properties file is not present.