diff --git a/mix.exs b/mix.exs
index 583638ea..8e0e308b 100644
--- a/mix.exs
+++ b/mix.exs
@@ -19,7 +19,8 @@ defmodule MusicLibrary.MixProject do
       ],
       usage_rules: usage_rules(),
       dialyzer: [
-        plt_add_apps: [:mix, :ex_unit]
+        plt_add_apps: [:mix, :ex_unit],
+        flags: [:no_opaque]
       ]
     ]
   end