diff --git a/mix.exs b/mix.exs
index 4b44020..6aab478 100644
--- a/mix.exs
+++ b/mix.exs
@@ -101,6 +101,11 @@ defmodule Argon2.MixProject do
         "LICENSE-MIT",
         ".formatter.exs"
       ],
+      exclude_patterns: [
+        "native/argon2/target",
+        "test",
+        "priv"
+      ],
       licenses: ["MIT", "Apache-2.0"],
       links: %{
         "Source repository" => @source_url