Suhhoruki Mihhail ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5ca46c8... ) *commented* on HHH-16696 ( https://hibernate.atlassian.net/browse/HHH-16696?atlOrigin=eyJpIjoiNDE4OT... ) Re: hibernate-core >= 6.2.0 stopped invoking PostgreSQLDialect.initializeFunctionRegistry(QueryEngine) ( https://hibernate.atlassian.net/browse/HHH-16696?atlOrigin=eyJpIjoiNDE4OT... ) It seems that Eclipse was linking to older hibernate-core source when I looked up PostgreSQLDialect hierarchy (hence why it did not complain about the @Override on the old initializeFunctionRegistry ) But as I wrote - your answer led me to find org.hibernate.boot.model.FunctionContributor interface, which can be used to register custom functions without relying on Dialect. ( https://hibernate.atlassian.net/browse/HHH-16696#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16696#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100225- sha1:d82e018 )