diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index a80ff7ac25..d2cea2d606 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -1543,7 +1543,8 @@ class Formula
   # Standard parameters for cargo builds.
   sig { params(root: T.any(String, Pathname), path: String).returns(T::Array[T.any(String, Pathname)]) }
   def std_cargo_args(root: prefix, path: ".")
-    ["--locked", "--root", root, "--path", path]
+    ["--locked", "--root", root, "--path", path, "--config",
+     "build.rustflags=['#{Hardware::CPU.rustflags_target_cpu}']"]
   end
 
   # Standard parameters for CMake builds.