Today, Neo4j released version 1.9.3, a bugfix release in the 1.9.x series with no new features, restoring an old way of registering unmanaged extensions with the server. Users on earlier 1.9 releases are strongly encouraged to upgrade without downtime in an HA cluster. The new version can be downloaded from the neo4j.org website. This update is part of Neo4j's ongoing efforts to improve the stability and security of its graph database platform.