diff --git a/config/test.exs b/config/test.exs
index eb40687..fea6c11 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -14,6 +14,7 @@ config :chess, Chess.Repo,
   adapter: Ecto.Adapters.Postgres,
   database: "chess_test",
   hostname: "localhost",
+  port: System.get_env("POSTGRES_PORT") || "5432",
   pool: Ecto.Adapters.SQL.Sandbox
 
 config :hound, driver: "phantomjs"