diff --git a/.buildpacks b/.buildpacks
deleted file mode 100644
index a90e52d..0000000
--- a/.buildpacks
+++ /dev/null
@@ -1,4 +0,0 @@
-https://github.com/gigalixir/gigalixir-buildpack-clean-cache.git
-https://github.com/HashNuke/heroku-buildpack-elixir
-https://github.com/gjaldon/heroku-buildpack-phoenix-static
-https://github.com/gigalixir/gigalixir-buildpack-distillery.git
diff --git a/mix.exs b/mix.exs
index 9757705..a95825d 100644
--- a/mix.exs
+++ b/mix.exs
@@ -5,7 +5,7 @@ defmodule Chess.Mixfile do
     [
       app: :chess,
       version: "0.2.0",
-      elixir: "~> 1.11.3",
+      elixir: "~> 1.11.4",
       elixirc_paths: elixirc_paths(Mix.env()),
       compilers: [:phoenix, :gettext] ++ Mix.compilers(),
       build_embedded: Mix.env() == :prod,