diff --git a/mix.exs b/mix.exs
index f3237cc..c773a66 100644
--- a/mix.exs
+++ b/mix.exs
@@ -41,7 +41,7 @@ defmodule MidiProto.MixProject do
     [
       {:credo, "~> 1.6", only: [:dev, :test], runtime: false},
       {:earmark, ">= 1.4.20", only: [:dev, :test]},
-      {:ex_doc, ">= 0.26.0", only: [:dev, :test]},
+      {:ex_doc, ">= 0.28.0", only: [:dev, :test]},
       {:git_ops, "~> 2.4", only: ~w[dev test]a, runtime: false}
     ]
   end