diff --git a/config/test.exs b/config/test.exs
index 326694e..45acaa4 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -12,7 +12,7 @@ config :mv, Mv.Repo,
   port: System.get_env("TEST_POSTGRES_PORT", "5000"),
   database: "mv_test#{System.get_env("MIX_TEST_PARTITION")}",
   pool: Ecto.Adapters.SQL.Sandbox,
-  pool_size: System.schedulers_online() * 2
+  pool_size: System.schedulers_online() * 4
 
 # We don't run a server during test. If one is required,
 # you can enable the server option below.