diff --git a/flake.nix b/flake.nix
index eda55cc..7415250 100644
--- a/flake.nix
+++ b/flake.nix
@@ -40,6 +40,8 @@ Some utility commands:
           version = "0.1.0";
           nativeBuildInputs = with pkgs; [ pkg-config ];
           buildInputs = with pkgs; [ openssl ];
+          # rustPlatform.fetchCargoTarball is deprecated in favor of rustPlatform.fetchCargoVendor.
+          useFetchCargoVendor = true;
           cargoHash = "sha256-eKsQsOIiZDpDOGLMcpU+dL/e/UBEnbQIgcVPKi5xpC8=";
           meta = with nixpkgs.lib; {
             homepage = "https://tegakituesday.com";