diff --git a/python/mozbuild/mozbuild/vendor/vendor_rust.py b/python/mozbuild/mozbuild/vendor/vendor_rust.py
index 8616ab908ecf..b0a57aa6e748 100644
--- a/python/mozbuild/mozbuild/vendor/vendor_rust.py
+++ b/python/mozbuild/mozbuild/vendor/vendor_rust.py
@@ -196,6 +196,7 @@ class VendorRust(MozbuildObject):
             f
             for f in self.repository.get_changed_files("M")
             if os.path.basename(f) not in ("Cargo.toml", "Cargo.lock")
+            and not f.startswith("supply-chain/")
         ]
         if modified:
             self.log(