Jaybird 3.0.8 has been released. This release contains one bug fix:

* Fixed: On Firebird 3 and 4 with WireCrypt = Enabled, the connection
could hang or throw exceptions like "Unsupported or unexpected operation
code". (JDBC-599)

Jaybird 3.0 supports Firebird 2.0 and higher, on Java 7, 8, 11 and 13.
Basic Java 9 and higher compatibility is provided through the Java 8
version of the driver.

See also:

* Jaybird 3.0.8 release notes:
https://www.firebirdsql.org/file/documentation/drivers_documentation/java/3.0.8/release_notes.html
* Jaybird downloads: https://www.firebirdsql.org/en/jdbc-driver/
* Instructions for Maven:
https://www.firebirdsql.org/file/documentation/drivers_documentation/java/3.0.8/release_notes.html#maven
--
Mark Rotteveel