Using the Ubuntu 14.04 (Trusty) environment you should be able to use Postgres 9.5.3 according to the docs: https://circleci.com/docs/build-image-trusty/ When I print the versions of both psql and pg_dump I get the following version mismatch: psql (PostgreSQL) 9.5.3 pg_dump (PostgreSQL) 9.4.8 Lo…

Postgres 9.5.3 `pg_dump` version mismatch

tom June 15, 2016, 10:19am 5

This is now fixed in the latest release of our 14.04 image. 9.5.3 is now the only version running (both server and client) by default.

If you need 9.4, please see this post: Request: Postgres 9.5

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