diff --git a/mnemo_cards_backend/lib/api/di/injector.config.dart b/mnemo_cards_backend/lib/api/di/injector.config.dart
index de7ced4..05ff00d 100644
--- a/mnemo_cards_backend/lib/api/di/injector.config.dart
+++ b/mnemo_cards_backend/lib/api/di/injector.config.dart
@@ -67,6 +67,7 @@ extension GetItInjectableX on _i174.GetIt {
     final gh = _i526.GetItHelper(this, environment, environmentFilter);
     final appModule = _$AppModule();
     gh.singleton<_i1072.AppDatabase>(() => appModule.database);
+    gh.singleton<_i988.YooMoneyHandler>(() => appModule.yooMoneyHandler);
     gh.singleton<_i533.MinioConfig>(() => appModule.minioConfig);
     gh.lazySingleton<_i846.AdsManager>(() => _i846.AdsManager());
     gh.lazySingleton<_i222.RustorePurchaseHandler>(
@@ -140,6 +141,13 @@ extension GetItInjectableX on _i174.GetIt {
     gh.lazySingleton<_i858.DiscountsApiV2>(
       () => _i858.DiscountsApiV2(gh<_i891.DiscountsManager>()),
     );
+    gh.lazySingleton<_i1009.PaymentManager>(
+      () => _i1009.PaymentManager(
+        gh<_i1072.AppDatabase>(),
+        gh<_i988.YooMoneyHandler>(),
+        gh<_i222.RustorePurchaseHandler>(),
+      ),
+    );
     gh.lazySingleton<_i365.MediaApiV2>(
       () => _i365.MediaApiV2(gh<_i747.MinioService>()),
     );
@@ -163,9 +171,11 @@ extension GetItInjectableX on _i174.GetIt {
         gh<_i108.JwtService>(),
       ),
     );
-    gh.lazySingleton<_i988.YooMoneyHandler>(
-      () =>
-          _i988.YooMoneyHandler(shopId: gh<String>(), secretKey: gh<String>()),
+    gh.lazySingleton<_i151.PromoCodesManager>(
+      () => _i151.PromoCodesManager(
+        gh<_i1072.AppDatabase>(),
+        gh<_i1009.PaymentManager>(),
+      ),
     );
     gh.lazySingleton<_i560.UserManager>(
       () => _i560.UserManager(
@@ -179,12 +189,29 @@ extension GetItInjectableX on _i174.GetIt {
     gh.lazySingleton<_i561.MnemoShelf>(
       () => _i561.MnemoShelf(gh<_i280.UserManager>()),
     );
+    gh.lazySingleton<_i247.UsersApiV2>(
+      () => _i247.UsersApiV2(
+        gh<_i280.UserManager>(),
+        gh<_i1009.PaymentManager>(),
+        gh<_i1029.StatisticsCalculator>(),
+        gh<_i1072.AppDatabase>(),
+      ),
+    );
+    gh.lazySingleton<_i273.PromocodesApiV2>(
+      () => _i273.PromocodesApiV2(gh<_i151.PromoCodesManager>()),
+    );
     gh.lazySingleton<_i908.ProductsPriceResolver>(
       () => _i908.ProductsPriceResolver(
         gh<_i891.DiscountsManager>(),
         gh<_i1072.AppDatabase>(),
       ),
     );
+    gh.lazySingleton<_i735.CheckPaymentTask>(
+      () => _i735.CheckPaymentTask(
+        gh<_i1009.PaymentManager>(),
+        gh<_i1072.AppDatabase>(),
+      ),
+    );
     gh.lazySingleton<_i170.TestsApiV2>(
       () => _i170.TestsApiV2(
         gh<_i259.TestManager>(),
@@ -201,42 +228,12 @@ extension GetItInjectableX on _i174.GetIt {
         gh<_i240.TelegramAuthCodeService>(),
       ),
     );
-    gh.lazySingleton<_i1009.PaymentManager>(
-      () => _i1009.PaymentManager(
-        gh<_i1072.AppDatabase>(),
-        gh<_i988.YooMoneyHandler>(),
-        gh<_i222.RustorePurchaseHandler>(),
-      ),
-    );
-    gh.lazySingleton<_i151.PromoCodesManager>(
-      () => _i151.PromoCodesManager(
-        gh<_i1072.AppDatabase>(),
-        gh<_i1009.PaymentManager>(),
-      ),
-    );
     gh.lazySingleton<_i433.PackDtoConverter>(
       () => _i433.PackDtoConverter(
         gh<_i908.ProductsPriceResolver>(),
         gh<_i846.AdsManager>(),
       ),
     );
-    gh.lazySingleton<_i247.UsersApiV2>(
-      () => _i247.UsersApiV2(
-        gh<_i280.UserManager>(),
-        gh<_i1009.PaymentManager>(),
-        gh<_i1029.StatisticsCalculator>(),
-        gh<_i1072.AppDatabase>(),
-      ),
-    );
-    gh.lazySingleton<_i273.PromocodesApiV2>(
-      () => _i273.PromocodesApiV2(gh<_i151.PromoCodesManager>()),
-    );
-    gh.lazySingleton<_i735.CheckPaymentTask>(
-      () => _i735.CheckPaymentTask(
-        gh<_i1009.PaymentManager>(),
-        gh<_i1072.AppDatabase>(),
-      ),
-    );
     gh.lazySingleton<_i833.PackManager>(
       () => _i833.PackManager(
         gh<_i1072.AppDatabase>(),
diff --git a/mnemo_cards_backend/lib/api/di/modules.dart b/mnemo_cards_backend/lib/api/di/modules.dart
index d12db07..661b3c1 100644
--- a/mnemo_cards_backend/lib/api/di/modules.dart
+++ b/mnemo_cards_backend/lib/api/di/modules.dart
@@ -4,14 +4,18 @@ import 'package:injectable/injectable.dart';
 import '../../database/database.dart';
 import '../../main.dart' as backend_main;
 import '../../storage/minio_config.dart';
+import '../purchase/yoo_money.dart';
 
 @module
 abstract class AppModule {
   @singleton
   AppDatabase get database => backend_main.database;
 
-  // YooMoneyHandler is registered via @LazySingleton() annotation
-  // in yoo_money.dart, so we don't need to register it here
+  @singleton
+  YooMoneyHandler get yooMoneyHandler => YooMoneyHandler(
+    shopId: Platform.environment['YOOKASSA_SHOP_ID'] ?? '',
+    secretKey: Platform.environment['YOOKASSA_SECRET_KEY'] ?? '',
+  );
 
   @singleton
   MinioConfig get minioConfig => MinioConfig.fromEnvironment();
diff --git a/mnemo_cards_backend/lib/api/purchase/yoo_money.dart b/mnemo_cards_backend/lib/api/purchase/yoo_money.dart
index 13e5b99..0b02057 100644
--- a/mnemo_cards_backend/lib/api/purchase/yoo_money.dart
+++ b/mnemo_cards_backend/lib/api/purchase/yoo_money.dart
@@ -3,7 +3,6 @@ import 'dart:developer';
 import 'dart:io';
 
 import 'package:dio/dio.dart';
-import 'package:injectable/injectable.dart';
 import 'package:uuid/uuid.dart';
 
 /// Wrapper for YooKassa payment response
@@ -22,7 +21,7 @@ class YookassaPayment {
 /// Handler for YooKassa payment integration
 /// Implements YooKassa API v3 according to OpenAPI specification
 /// https://yookassa.ru/developers/using-api/openapi-specification
-@LazySingleton()
+/// Note: Registered via @module in modules.dart to provide environment variables
 class YooMoneyHandler {
   final String _shopId;
   final String _secretKey;