This page collects the guides for migrating from one release of Hibernate Core to the next.

• Migrating from 2.x to 3.0

• Migrating from 3.0 to 3.1
• Migrating from 3.1 to 3.2
• Migrating from 3.2 to 3.3
• Migrating from 3.3 to 3.5
• Migrating from 3.5 to 3.6
• Migrating from 3.6 to 4.0