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Cedar-14 and Heroku-16 Stack Images Updated
Change effective on 19 April 2018
We have updated the Cedar-14 and Heroku-16 stack images to address security vulnerabilities in the libssl, openjdk and libicu packages.
The new stack images will be rolled out automatically in the next 24 hours. You do not need to redeploy your app or restart your dynos.
See this Dev Center article for an overview of the libraries available on the Cedar-14 and Heroku-16 stack images.