diff --git a/config/prod.exs b/config/prod.exs
index 0a6854c..9d8479f 100644
--- a/config/prod.exs
+++ b/config/prod.exs
@@ -5,19 +5,19 @@ config :chess, ChessWeb.Endpoint,
   check_origin: ["https://chess.danbarber.me", "https://64squares.club"],
   http: [port: {:system, "PORT"}],
   root: "./assets",
-  secret_key_base: "${SECRET_KEY_BASE}",
+  secret_key_base: System.get_env("SECRET_KEY_BASE"),
   server: true,
-  url: [scheme: "https", host: "${HOST}", port: "${URL_PORT}"],
+  url: [scheme: "https", host: System.get_env("HOST"), port: System.get_env("URL_PORT")],
   version: Application.spec(:chess, :vsn)
 
 config :chess, Chess.Mailer,
   adapter: Bamboo.MailgunAdapter,
-  api_key: "${MAILGUN_API_KEY}",
-  domain: "${MAILGUN_DOMAIN}"
+  api_key: System.get_env("MAILGUN_API_KEY"),
+  domain: System.get_env("MAILGUN_DOMAIN")
 
 config :chess, Chess.Repo,
   adapter: Ecto.Adapters.Postgres,
-  url: "${DATABASE_URL}",
+  url: System.get_env("DATABASE_URL"),
   database: "",
   ssl: true,
   pool_size: 1
diff --git a/rel/config.exs b/rel/config.exs
index b8c84b8..56d9c68 100644
--- a/rel/config.exs
+++ b/rel/config.exs
@@ -39,6 +39,12 @@ environment :prod do
   set include_src: false
   set cookie: :"lhX:Fbp>xJ&V;50V~CY<vA7Wtf!T)N_A:O!9s$.G@jOAL=hxYF*qL;ksj|m^Y!e^"
   set vm_args: "rel/vm.args"
+  set config_providers: [
+    {Distillery.Releases.Config.Providers.Elixir, ["${RELEASE_ROOT_DIR}/etc/config.exs"]}
+  ]
+  set overlays: [
+    {:copy, "rel/config/config.exs", "etc/config.exs"}
+  ]
 end
 
 # You may define one or more releases in this file.
diff --git a/rel/config/config.exs b/rel/config/config.exs
new file mode 100644
index 0000000..0a6854c
--- /dev/null
+++ b/rel/config/config.exs
@@ -0,0 +1,23 @@
+use Mix.Config
+
+config :chess, ChessWeb.Endpoint,
+  cache_static_manifest: "priv/static/cache_manifest.json",
+  check_origin: ["https://chess.danbarber.me", "https://64squares.club"],
+  http: [port: {:system, "PORT"}],
+  root: "./assets",
+  secret_key_base: "${SECRET_KEY_BASE}",
+  server: true,
+  url: [scheme: "https", host: "${HOST}", port: "${URL_PORT}"],
+  version: Application.spec(:chess, :vsn)
+
+config :chess, Chess.Mailer,
+  adapter: Bamboo.MailgunAdapter,
+  api_key: "${MAILGUN_API_KEY}",
+  domain: "${MAILGUN_DOMAIN}"
+
+config :chess, Chess.Repo,
+  adapter: Ecto.Adapters.Postgres,
+  url: "${DATABASE_URL}",
+  database: "",
+  ssl: true,
+  pool_size: 1