diff --git a/packages/rust/config.toml b/packages/rust/config.toml
index a965da3d0..f098a24b5 100644
--- a/packages/rust/config.toml
+++ b/packages/rust/config.toml
@@ -7,6 +7,8 @@ link-shared = true
 [build]
 host = ["@triple@"]
 target = ["@triple@"]
+rustc = "@RUSTC@"
+cargo = "@CARGO@" 
 
 python = "python2.7"
 extended = true