NISO is pleased to announce the formal publication of an updated version of the ResourceSync Framework Specification (ANSI/NISO Z39.99-2017). Approved by the American National Standards Institute (ANSI), this 1.1 revision improves a web standard that details various capabilities that a server can implement to allow third-party systems to remain synchronized with evolving resources. Such synchronization is important in the current landscape where Web-based content—not only the metadata about that content—is constantly changing.