diff --git a/mix.exs b/mix.exs
index ee5a69aa..99f7df84 100644
--- a/mix.exs
+++ b/mix.exs
@@ -5,7 +5,7 @@ defmodule Protox.Mixfile do
     [
       app: :protox,
       version: "1.7.2",
-      elixir: "~> 1.9",
+      elixir: "~> 1.12",
       build_embedded: Mix.env() == :prod,
       start_permanent: Mix.env() == :prod,
       deps: deps(),