Deprecation Warnings 5.1 introduces a few deprecations. All of these features will continue for the duration of 5.x but will be removed in 6.0. See the migration guide. What’s new in 5.1.0? The migration guide has a complete list of what’s new in 5.1.0. We recommend you give that page a read when upgrading. A few highlights from 5.1.0 are: RedisEngine now supports TLS connections. bin/cake plugin