Postgres 9.4.0 was released 2014-12-18 The version convention has changed with v10.0 so it should be trivial to change from 10.x to 11.x . In your position I'd

Postgres 9.4.0 was released 2014-12-18 The version convention has changed with v10.0 so it should be trivial to change from 10.x to 11.x . In your position I'd be updating 9.4.x -> 9.5.x -> 9.6.x -> 10.x