diff --git a/mix.exs b/mix.exs
index f60ad55..6de0dfc 100644
--- a/mix.exs
+++ b/mix.exs
@@ -10,7 +10,7 @@ defmodule Tower.MixProject do
       app: :tower,
       description: @description,
       version: @version,
-      elixir: "~> 1.16",
+      elixir: "~> 1.15",
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       package: package(),