diff --git a/lingui.config.ts b/lingui.config.ts
index 5ed5534f..233b4f19 100644
--- a/lingui.config.ts
+++ b/lingui.config.ts
@@ -13,7 +13,7 @@ import { formatter } from '@lingui/format-po';
 // eslint-disable-next-line import/no-default-export
 export default defineConfig({
     sourceLocale: 'en',
-    // This array is auto-generated by tools/scripts/weblate/generatei18nResources.ts. Do not edit manually.
+    // !!!IMPORTANT!!!: 'locales' is auto-generated by tools/scripts/weblate/generatei18nResources.ts. Do not edit manually.
     locales: [
         'de',
         'en',
diff --git a/src/features/metadata/Metadata.constants.ts b/src/features/metadata/Metadata.constants.ts
index 2f38e771..97cab0b4 100644
--- a/src/features/metadata/Metadata.constants.ts
+++ b/src/features/metadata/Metadata.constants.ts
@@ -34,7 +34,7 @@ import { LibraryOptions } from '@/features/library/Library.types.ts';
 import { MetadataThemeSettings } from '@/features/theme/AppTheme.types.ts';
 import { TapZoneInvertMode } from '@/features/reader/tap-zones/TapZoneLayout.types.ts';
 import { detectLocale, getISOLanguage } from '@/lib/ISOLanguageUtil.ts';
-import { i18nResources } from '@/i18n';
+import { I18nResourceCode, i18nResources } from '@/i18n';
 import { toUniqueLanguageCodes } from '@/base/utils/Languages.ts';
 
 export const APP_METADATA_KEY_PREFIX = 'webUI';
@@ -385,7 +385,7 @@ export const APP_METADATA: Record<
         toConstrainedValue: (value: string) => {
             const locale = getISOLanguage(value)?.isoCode;
 
-            if (!locale || !i18nResources.includes(locale)) {
+            if (!locale || !i18nResources.includes(locale as I18nResourceCode)) {
                 return detectLocale();
             }
 
diff --git a/src/i18n/index.ts b/src/i18n/index.ts
index 1fd9f3c6..6a9c46e0 100644
--- a/src/i18n/index.ts
+++ b/src/i18n/index.ts
@@ -10,7 +10,14 @@ import { i18n } from '@lingui/core';
 import { detectLocale, SELECTED_LANGUAGE_CODE_KEY } from '@/lib/ISOLanguageUtil.ts';
 import { AppStorage } from '@/lib/storage/AppStorage.ts';
 
-// This array is auto-generated by tools/scripts/weblate/generatei18nResources.ts. Do not edit manually.
+/**
+ * Keys have to match {@link IsoLanguages} codes, they're used for showing the language name in the dropdown in the {@link Settings}.<br/>
+ * In case there is no language code for the key in {@link IsoLanguages}, the corresponding language has to be added
+ *
+ * **IMPORTANT:**
+ *
+ * This is generated by the `i18n:gen-resources` script
+ */
 export const i18nResources = [
     'de',
     'en',
diff --git a/src/i18n/locales.json b/src/i18n/locales.json
deleted file mode 100644
index fddb76f7..00000000
--- a/src/i18n/locales.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "comment": "!!!IMPORTANT!!!: 'locales' is auto generated by tools/scripts/weblate/generatei18nResources.ts. Do not edit manually.",
-  "locales": [
-    "de",
-    "en",
-    "es",
-    "fa",
-    "fr",
-    "hu",
-    "it",
-    "ja",
-    "ko",
-    "pl",
-    "pt",
-    "ru",
-    "ta",
-    "tr",
-    "vi",
-    "zh_Hans",
-    "zh_Hant"
-  ],
-  "defaultLocale": "en"
-}
diff --git a/tools/scripts/weblate/generatei18nResources.ts b/tools/scripts/weblate/generatei18nResources.ts
index ac0276d2..f560986e 100644
--- a/tools/scripts/weblate/generatei18nResources.ts
+++ b/tools/scripts/weblate/generatei18nResources.ts
@@ -17,9 +17,11 @@ import {
 import { WeblateLanguageStatistic } from './Weblate.types.ts';
 import { TRANSLATED_PERCENT_THRESHOLD } from './Weblate.constants.ts';
 
-const FILE_PATH = 'src/i18n/locales.json';
+const I18N_INDEX_PATH = 'src/i18n/index.ts';
+const LINGUI_CONFIG_PATH = 'lingui.config.ts';
 
-const outputFilePath = path.join(import.meta.dirname, `../../../${FILE_PATH}`);
+const i18nIndexFilePath = path.join(import.meta.dirname, `../../../${I18N_INDEX_PATH}`);
+const linguiConfigFilePath = path.join(import.meta.dirname, `../../../${LINGUI_CONFIG_PATH}`);
 const resourcesDirPath = path.join(import.meta.dirname, '../../../src/i18n/locales');
 
 const extractLanguageCode = (resourceFileNames: string): string =>
@@ -43,6 +45,25 @@ const meetsTranslatedPercentThreshold = (
     return meetsThreshold;
 };
 
+const formatLocalesArray = (locales: string[]): string => locales.map((locale) => `'${locale}'`).join(', ');
+
+const updateI18nIndex = (locales: string[]): void => {
+    const content = fs.readFileSync(i18nIndexFilePath, 'utf-8');
+    const localesArrayStr = formatLocalesArray(locales);
+    const updatedContent = content.replace(
+        /(export const i18nResources = \[)[\s\S]*?(] as const)/g,
+        `$1${localesArrayStr}$2`,
+    );
+    fs.writeFileSync(i18nIndexFilePath, updatedContent);
+};
+
+const updateLinguiConfig = (locales: string[]): void => {
+    const content = fs.readFileSync(linguiConfigFilePath, 'utf-8');
+    const localesArrayStr = formatLocalesArray(locales);
+    const updatedContent = content.replace(/(locales: \[)[\s\S]*?(],)/g, `$1${localesArrayStr}$2`);
+    fs.writeFileSync(linguiConfigFilePath, updatedContent);
+};
+
 const generateResources = async () => {
     const weblateLanguageStats = await fetchWeblateLanguageStats();
 
@@ -52,21 +73,26 @@ const generateResources = async () => {
         .filter((resourceFileName) => meetsTranslatedPercentThreshold(resourceFileName, weblateLanguageStats))
         .map(extractLanguageCode);
 
-    const localesConfig = JSON.parse(fs.readFileSync(outputFilePath, 'utf-8'));
-
-    localesConfig.locales = resourceNames;
-
-    fs.writeFileSync(outputFilePath, `${JSON.stringify(localesConfig, null, 2)}\n`);
+    updateI18nIndex(resourceNames);
+    updateLinguiConfig(resourceNames);
 
     execSync('yarn tsc', { stdio: 'inherit' });
+    execSync(`yarn eslint --fix ${I18N_INDEX_PATH} ${LINGUI_CONFIG_PATH}`, { stdio: 'inherit' });
 
-    const hasFileChanged = execSync('git status --porcelain').toString().includes(FILE_PATH);
-    if (!hasFileChanged) {
+    const hasI18nIndexChanged = execSync('git status --porcelain').toString().includes(I18N_INDEX_PATH);
+    const hasLinguiConfigChanged = execSync('git status --porcelain').toString().includes(LINGUI_CONFIG_PATH);
+
+    if (!hasI18nIndexChanged && !hasLinguiConfigChanged) {
         return;
     }
 
     execSync('git reset');
-    execSync(`git add ${FILE_PATH}`);
+    if (hasI18nIndexChanged) {
+        execSync(`git add ${I18N_INDEX_PATH}`);
+    }
+    if (hasLinguiConfigChanged) {
+        execSync(`git add ${LINGUI_CONFIG_PATH}`);
+    }
     execSync('git commit -m "Update available languages"');
 };