diff --git a/default.nix b/default.nix
index 148800e..5e1c953 100644
--- a/default.nix
+++ b/default.nix
@@ -23,7 +23,10 @@
       deps = fetchMixDeps {
         pname = "mix-deps-${pname}";
         inherit version src;
-        sha256 = "sha256-/9Ushiv0z1wJL9FwebUF4gem8IOwlUPnQuDBiXV0Ib8=";
+        sha256 = {
+          "x86_64-linux" = "sha256-/9Ushiv0z1wJL9FwebUF4gem8IOwlUPnQuDBiXV0Ib8=";
+          "aarch64-darwin" = "sha256-8gFgTV1qYrC3iw5/AyeEOMAYtcEK7wTXie+Z9RDrqUI=";
+        }.${pkgs.system};
       };
       hash = builtins.substring 11 32 "${./mix.lock}";
     in