diff --git a/frontend/eslint.config.js b/frontend/eslint.config.js
index 5996483d8e1..a32d5d40818 100644
--- a/frontend/eslint.config.js
+++ b/frontend/eslint.config.js
@@ -9,7 +9,6 @@ import vueScopedCSS from 'eslint-plugin-vue-scoped-css';
 import css from 'eslint-plugin-css';
 import vue from 'eslint-plugin-vue';
 import i18n from '@intlify/eslint-plugin-vue-i18n';
-import { FlatCompat } from '@eslint/eslintrc';
 import gitignore from 'eslint-config-flat-gitignore';
 import stylistic from '@stylistic/eslint-plugin';
 import sonarjs from 'eslint-plugin-sonarjs';
@@ -27,11 +26,7 @@ const jsoncRecommended = jsonc.configs['flat/recommended-with-json'];
 
 /**
  * Util functions
- * TODO: Can be removed once all ESLint plugins are updated to support Flat config
  */
-const compat = new FlatCompat({
-  baseDirectory: import.meta.dirname
-});
 const flatArrayOfObjects = obj => Object.assign({}, ...obj);
 
 export default tseslint.config(
@@ -164,11 +159,6 @@ export default tseslint.config(
     name: '(regexp) Extended config from plugin',
     files: vueAndTsFiles
   },
-  {
-    ...flatArrayOfObjects(compat.extends('plugin:you-dont-need-lodash-underscore/all')),
-    name: '(you-dont-need-lodash) Extended config from plugin',
-    files: vueAndTsFiles
-  },
   {
     ...promise.configs['flat/recommended'],
     name: '(promise) Extended config from plugin',
@@ -184,7 +174,7 @@ export default tseslint.config(
   },
   {
     name: '(import) Custom config',
-    // TODO: Remove after: https://github.com/eslint/eslint/pull/18134
+    // TODO: Remove .js after: https://github.com/eslint/eslint/pull/18134
     files: [...vueAndTsFiles, '**/*.js'],
     plugins: {
       'import-x': eslintImportX
diff --git a/frontend/package.json b/frontend/package.json
index e3613f47ad1..0c7342bd6bb 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -49,7 +49,6 @@
   },
   "devDependencies": {
     "@eslint/config-inspector": "0.5.4",
-    "@eslint/eslintrc": "3.1.0",
     "@eslint/js": "9.10.0",
     "@iconify/json": "2.2.246",
     "@intlify/eslint-plugin-vue-i18n": "3.0.0",
@@ -77,7 +76,6 @@
     "eslint-plugin-unicorn": "55.0.0",
     "eslint-plugin-vue": "9.28.0",
     "eslint-plugin-vue-scoped-css": "2.8.1",
-    "eslint-plugin-you-dont-need-lodash-underscore": "6.14.0",
     "globals": "15.9.0",
     "lightningcss": "1.26.0",
     "rollup-plugin-visualizer": "5.12.0",
diff --git a/package-lock.json b/package-lock.json
index 0fe01bfffc1..3da4f63797a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -48,7 +48,6 @@
       },
       "devDependencies": {
         "@eslint/config-inspector": "0.5.4",
-        "@eslint/eslintrc": "3.1.0",
         "@eslint/js": "9.10.0",
         "@iconify/json": "2.2.246",
         "@intlify/eslint-plugin-vue-i18n": "3.0.0",
@@ -76,7 +75,6 @@
         "eslint-plugin-unicorn": "55.0.0",
         "eslint-plugin-vue": "9.28.0",
         "eslint-plugin-vue-scoped-css": "2.8.1",
-        "eslint-plugin-you-dont-need-lodash-underscore": "6.14.0",
         "globals": "15.9.0",
         "lightningcss": "1.26.0",
         "rollup-plugin-visualizer": "5.12.0",
@@ -4909,19 +4907,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/eslint-plugin-you-dont-need-lodash-underscore": {
-      "version": "6.14.0",
-      "resolved": "https://registry.npmjs.org/eslint-plugin-you-dont-need-lodash-underscore/-/eslint-plugin-you-dont-need-lodash-underscore-6.14.0.tgz",
-      "integrity": "sha512-3zkkU/O1agczP7szJGHmisZJS/AknfVl6mb0Zqoc95dvFsdmfK+cbhrn+Ffy0UWB1pgDJwQr7kIO3rPstWs3Dw==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "kebab-case": "^1.0.0"
-      },
-      "engines": {
-        "node": ">=4.0"
-      }
-    },
     "node_modules/eslint-scope": {
       "version": "8.0.2",
       "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-8.0.2.tgz",
@@ -6239,13 +6224,6 @@
         "graceful-fs": "^4.1.6"
       }
     },
-    "node_modules/kebab-case": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/kebab-case/-/kebab-case-1.0.2.tgz",
-      "integrity": "sha512-7n6wXq4gNgBELfDCpzKc+mRrZFs7D+wgfF5WRFLNAr4DA/qtr9Js8uOAVAfHhuLMfAcQ0pRKqbpjx+TcJVdE1Q==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/keyv": {
       "version": "4.5.4",
       "resolved": "https://registry.npmjs.org/keyv/-/keyv-4.5.4.tgz",