openLCA <= 1.11 only works with Java 8 because of some library dependencies that are not compatible with newer Java versions. The only way would be to update these dependencies but this requires changes in the code. openLCA >= 2.00 (not available in the Maven Central yet, but can be build and linked from source) works with Java >= 17; but the API changed here (with a lot of improvements). If possible, then the best option is probably to directly update to Java 17 and go with openLCA 2.