diff --git a/mix.exs b/mix.exs
index 156f9b2..c635b71 100644
--- a/mix.exs
+++ b/mix.exs
@@ -8,7 +8,7 @@ defmodule TTEth.MixProject do
       app: :tt_eth,
       version: @version,
       description: "Ethereum primitives for Elixir.",
-      elixir: "~> 1.11",
+      elixir: "~> 1.13",
       elixirc_paths: elixirc_paths(Mix.env()),
       deps: deps(),
       # Docs