diff --git a/config/runtime.exs b/config/runtime.exs
index cdebf7e..add677a 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -40,7 +40,6 @@ if config_env() == :prod do
 
   config :customer_service, CustomerService.Repo,
     url: database_url,
-    pool_size: 1,
     pool_size: String.to_integer(System.get_env("DATABASE_POOL_SIZE") || "1"),
     socket_options: maybe_ipv6