diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 51d48db..7e1e907 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,6 +17,8 @@ jobs:
             erlang: '25.3.2.12'
           - elixir: '1.14'
             erlang: '24.3.4.17'
+          - elixir: '1.13'
+            erlang: '23.3.4.20'
     steps:
       - uses: actions/checkout@v4
       - uses: erlef/setup-beam@v1
diff --git a/mix.exs b/mix.exs
index f7ad7a4..ff15260 100644
--- a/mix.exs
+++ b/mix.exs
@@ -10,7 +10,7 @@ defmodule Tower.MixProject do
       app: :tower,
       description: @description,
       version: @version,
-      elixir: "~> 1.14",
+      elixir: "~> 1.13",
       start_permanent: Mix.env() == :prod,
       deps: deps(),
       package: package(),