diff --git a/nixos/barcodebuddy.nix b/nixos/barcodebuddy.nix
index 0dab0a83..09b7152f 100644
--- a/nixos/barcodebuddy.nix
+++ b/nixos/barcodebuddy.nix
@@ -19,6 +19,8 @@ in {
     settings = {
       EXTERNAL_GROCY_URL = "https://grocy.${config.networking.domain}";
       DISABLE_AUTHENTICATION = true;
+      USE_GROCY_QU_FACTOR = true;
+      SHOW_STOCK_ON_SCAN = true;
     };
     nginxPhpSettings.extraConfig = ''
       include ${config.sops.secrets.barcodebuddy-fastcgi-params.path};
diff --git a/packages/barcodebuddy/default.nix b/packages/barcodebuddy/default.nix
index 6576488c..1718c133 100644
--- a/packages/barcodebuddy/default.nix
+++ b/packages/barcodebuddy/default.nix
@@ -1,6 +1,7 @@
 {
   stdenvNoCC,
   fetchFromGitHub,
+  fetchpatch,
   lib,
   ...
 }: let
@@ -17,6 +18,13 @@ in
       inherit (barcodebuddy.locked) repo owner rev;
       sha256 = barcodebuddy.locked.narHash;
     };
+    patches = [
+      (fetchpatch {
+        name = "barcodebuddy-quantity.patch";
+        url = "https://github.com/gensokyo-zone/barcodebuddy/commit/c46416b40540da0bef4841c2ddf884fa7dd152fe.diff";
+        sha256 = "sha256-PPVZ996Tm+/YkzECFsy1PJQMCjk3+i9jQuOawYzXRgU=";
+      })
+    ];
 
     skipConfigure = true;
     skipBuild = true;