diff --git a/mcu-contrib/default.nix b/mcu-contrib/default.nix
index b670130..6527371 100644
--- a/mcu-contrib/default.nix
+++ b/mcu-contrib/default.nix
@@ -20,7 +20,12 @@ let
     };
   rust = rustChannelOfTargets "nightly" null targets;
   rustPlatform = pkgs.recurseIntoAttrs (pkgs.makeRustPlatform {
-    rustc = rust;
+    rustc = rust // {
+      # https://github.com/oxalica/rust-overlay/commit/c48c2d76b68dd9ede0815fec53479375c61af857
+      targetPlatforms = pkgs.lib.platforms.all;
+      tier1TargetPlatforms = pkgs.lib.platforms.all;
+      badTargetPlatforms = [ ];
+    };
     cargo = rust;
   });