diff --git a/packages/backend/package.json b/packages/backend/package.json
index e21caca..d938730 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -25,7 +25,7 @@
     "graphql": "^16.6.0",
     "graphql-middleware": "^6.1.33",
     "graphql-shield": "^7.6.3",
-    "i18next": "^20.3.1",
+    "i18next": "^25.3.2",
     "jsonwebtoken": "^8.5.1",
     "node-fetch": "^3.3.2",
     "object-hash": "^2.2.0",
diff --git a/packages/backend/src/i18n/index.ts b/packages/backend/src/i18n/index.ts
index 9e10945..10c5c00 100644
--- a/packages/backend/src/i18n/index.ts
+++ b/packages/backend/src/i18n/index.ts
@@ -1,4 +1,4 @@
-import i18next, { TFunctionResult, TOptions } from 'i18next'
+import i18next, { TOptions } from 'i18next'
 import { EmailTranslations, PrintTranslations } from '@lara/api'
 
 import { GermanTranslations } from './de'
@@ -46,17 +46,13 @@ i18next.init({
   },
 })
 
-export type TFunction = <TResult extends TFunctionResult = string>(
-  key: string,
-  lng?: string,
-  params?: TOptions
-) => TResult
+export type TFunction = <TResult = string | object>(key: string, lng?: string, params?: TOptions) => TResult
 
-export const t: TFunction = (key, lng, params) => {
-  return i18next.t(key, { lng: lng ?? 'de', ...params })
+export const t = <TResult = string | object>(key: string, lng?: string, params?: TOptions): TResult => {
+  return i18next.t(key, { lng: lng ?? 'de', ...params }) as unknown as TResult
 }
 
-type SimpleTFuntion = <TResult extends TFunctionResult = string>(key: string, params?: TOptions) => TResult
+type SimpleTFuntion = <TResult = string | object>(key: string, params?: TOptions) => TResult
 
 export const createT = (lng?: string): SimpleTFuntion => {
   return (key, params) => t(key, lng, params)
diff --git a/packages/backend/src/resolvers/trainee.resolver.ts b/packages/backend/src/resolvers/trainee.resolver.ts
index 7b0eea0..ccd86b3 100644
--- a/packages/backend/src/resolvers/trainee.resolver.ts
+++ b/packages/backend/src/resolvers/trainee.resolver.ts
@@ -80,8 +80,8 @@ export const traineeTraineeResolver: GqlResolvers<TraineeContext> = {
       const reportsData = filteredReports.map((report) => createPrintReportData(report, currentUser))
 
       const userData = await createPrintUserData(currentUser)
-      const printTranslations: PrintTranslations = t('print', currentUser.language)
-      const emailTranslations: EmailTranslations = t('email', currentUser.language)
+      const printTranslations = t<PrintTranslations>('print', currentUser.language)
+      const emailTranslations = t<EmailTranslations>('email', currentUser.language)
 
       const hash = await savePrintData({
         reportsData,
diff --git a/packages/frontend/webpack.config.js b/packages/frontend/webpack.config.js
index d90d560..98e9eeb 100644
--- a/packages/frontend/webpack.config.js
+++ b/packages/frontend/webpack.config.js
@@ -1,12 +1,10 @@
 // @ts-check
 
- 
 const webpack = require('webpack')
 const HtmlWebpackPlugin = require('html-webpack-plugin')
 const createStyledComponentsTransformer = require('typescript-plugin-styled-components').default
 const path = require('path')
 const dotenv = require('dotenv')
- 
 
 const {
   MICROSOFT_CLIENT_ID,
@@ -120,7 +118,7 @@ const webpackConfig = () => {
     plugins: [
       new webpack.DefinePlugin({
         ENVIRONMENT: JSON.stringify(getEnvironmentConfig()),
-         
+
         REVISION: JSON.stringify(require(__dirname + '/scripts/get-revision')()),
 
         TAG: JSON.stringify(process.env.LARA_VERSION),
diff --git a/yarn.lock b/yarn.lock
index df2a750..be4ea7a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1672,7 +1672,7 @@
   dependencies:
     "@babel/helper-plugin-utils" "^7.27.1"
 
-"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.0", "@babel/runtime@^7.12.13", "@babel/runtime@^7.12.5", "@babel/runtime@^7.15.4", "@babel/runtime@^7.21.0", "@babel/runtime@^7.23.9":
+"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.11.2", "@babel/runtime@^7.12.13", "@babel/runtime@^7.12.5", "@babel/runtime@^7.15.4", "@babel/runtime@^7.21.0", "@babel/runtime@^7.23.9", "@babel/runtime@^7.27.6":
   version "7.28.2"
   resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.28.2.tgz#2ae5a9d51cc583bd1f5673b3bb70d6d819682473"
   integrity sha512-KHp2IflsnGywDjBWDkR9iEqiWSpc8GIi0lgTT3mOElT0PP1tG26P4tmFI2YvAdzgq9RGyoHZQEIEdZy6Ec5xCA==
@@ -10561,12 +10561,12 @@ husky@^4.3.0:
     slash "^3.0.0"
     which-pm-runs "^1.0.0"
 
-i18next@^20.3.1:
-  version "20.6.1"
-  resolved "https://registry.yarnpkg.com/i18next/-/i18next-20.6.1.tgz#535e5f6e5baeb685c7d25df70db63bf3cc0aa345"
-  integrity sha512-yCMYTMEJ9ihCwEQQ3phLo7I/Pwycf8uAx+sRHwwk5U9Aui/IZYgQRyMqXafQOw5QQ7DM1Z+WyEXWIqSuJHhG2A==
+i18next@^25.3.2:
+  version "25.3.2"
+  resolved "https://registry.yarnpkg.com/i18next/-/i18next-25.3.2.tgz#3d6a7d1dc058caa1b9bdca47fd585483e2e7a637"
+  integrity sha512-JSnbZDxRVbphc5jiptxr3o2zocy5dEqpVm9qCGdJwRNO+9saUJS0/u4LnM/13C23fUEWxAylPqKU/NpMV/IjqA==
   dependencies:
-    "@babel/runtime" "^7.12.0"
+    "@babel/runtime" "^7.27.6"
 
 iconv-lite@0.4.24, iconv-lite@^0.4.24:
   version "0.4.24"