diff --git a/pkgs/by-name/ho/holo-daemon/package.nix b/pkgs/by-name/ho/holo-daemon/package.nix
index c71f737c54f8..10b86b93b7a1 100644
--- a/pkgs/by-name/ho/holo-daemon/package.nix
+++ b/pkgs/by-name/ho/holo-daemon/package.nix
@@ -25,7 +25,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
   cargoHash = "sha256-YZ2c6W6CCqgyN+6i7Vh5fWLKw8L4pUqvq/tDO/Q/kf0=";
 
   # Use rust nightly features
-  RUSTC_BOOTSTRAP = 1;
+  env.RUSTC_BOOTSTRAP = 1;
 
   nativeBuildInputs = [
     cmake