diff --git a/pkgs/by-name/au/ausweisapp/package.nix b/pkgs/by-name/au/ausweisapp/package.nix
index b69dfd9318c1..98a92fc9aff6 100644
--- a/pkgs/by-name/au/ausweisapp/package.nix
+++ b/pkgs/by-name/au/ausweisapp/package.nix
@@ -11,15 +11,21 @@
 }:
 stdenv.mkDerivation (finalAttrs: {
   pname = "ausweisapp";
-  version = "2.4.0";
+  version = "2.4.1";
 
   src = fetchFromGitHub {
     owner = "Governikus";
     repo = "AusweisApp2";
     rev = finalAttrs.version;
-    hash = "sha256-vMvCnYSj7y6ETGoudV1YJwI2bibXePSkR4nQ4T5HqTo=";
+    hash = "sha256-cLKF5QYDPngvN6+3p7B8YO/MYvDfD1fbnyEMZPmjj8w=";
   };
 
+  postPatch = ''
+    # avoid runtime QML cache to fix GUI loading issues
+    substituteInPlace src/ui/qml/CMakeLists.txt src/ui/qml/modules/CMakeLists.txt \
+      --replace-fail NO_CACHEGEN ""
+  '';
+
   nativeBuildInputs = [
     cmake
     pkg-config
@@ -41,6 +47,8 @@ stdenv.mkDerivation (finalAttrs: {
     qt6.qtwebsockets
   ];
 
+  env.LANG = "C.UTF-8";
+
   passthru = {
     tests.version = testers.testVersion {
       package = finalAttrs.finalPackage;