diff --git a/config/runtime.exs b/config/runtime.exs
index 9e97417..a949407 100644
--- a/config/runtime.exs
+++ b/config/runtime.exs
@@ -2,6 +2,10 @@ import Config
 
 config :jenot, host: System.fetch_env!("HOST")
 
+port = if config_env() == :test, do: 4001, else: 4000
+
+config :jenot, port: port
+
 config :jenot, secret_key_base: System.fetch_env!("SECRET_KEY_BASE")
 
 config :jenot, secure_cookie: System.fetch_env!("SECURE_COOKIE") == "true"
diff --git a/lib/jenot/application.ex b/lib/jenot/application.ex
index fae6fb7..2312fbf 100644
--- a/lib/jenot/application.ex
+++ b/lib/jenot/application.ex
@@ -9,7 +9,7 @@ defmodule Jenot.Application do
 
     children = [
       Jenot.Repo,
-      {Bandit, plug: Jenot.Web, scheme: :http, port: 4000}
+      {Bandit, plug: Jenot.Web, scheme: :http, port: Application.fetch_env!(:jenot, :port)}
     ]
 
     opts = [strategy: :one_for_one, name: Jenot.Supervisor]