diff --git a/pkgs/build-support/rust/build-rust-package/default.nix b/pkgs/build-support/rust/build-rust-package/default.nix
index b057d1681b03..5ba166bae1a3 100644
--- a/pkgs/build-support/rust/build-rust-package/default.nix
+++ b/pkgs/build-support/rust/build-rust-package/default.nix
@@ -154,8 +154,6 @@ stdenv.mkDerivation ((removeAttrs args [ "depsExtraArgs" "cargoUpdateHook" "carg
 
   strictDeps = true;
 
-  passthru = { inherit cargoDeps; } // (args.passthru or {});
-
   meta = {
     # default to Rust's platforms
     platforms = rustc.meta.platforms;