diff --git a/mix.exs b/mix.exs
index ed03469..d6cb1ff 100644
--- a/mix.exs
+++ b/mix.exs
@@ -8,7 +8,7 @@ defmodule Eth.Mixfile do
     [
       app: :eth,
       version: @version,
-      elixir: "~> 1.6",
+      elixir: "~> 1.11",
       description: description(),
       start_permanent: Mix.env() == :prod,
       package: package(),