diff --git a/.eslintrc.js b/.eslintrc.js
index 45acee758..6aa30b437 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -56,7 +56,6 @@ module.exports = {
         'no-async-promise-executor': 'off',
         'no-inner-declarations': 'off',
         'no-undef': 'off',
-        'no-prototype-builtins': 'off',
         'require-yield': 'off',
         'no-constant-condition': ['error', {checkLoops: false}]
     }
diff --git a/public/scripts/PromptManager.js b/public/scripts/PromptManager.js
index 6734e5a60..3132972c8 100644
--- a/public/scripts/PromptManager.js
+++ b/public/scripts/PromptManager.js
@@ -1643,7 +1643,7 @@ PromptManagerModule.prototype.import = function (importData) {
  */
 PromptManagerModule.prototype.validateObject = function (controlObj, object) {
     for (let key in controlObj) {
-        if (!object.hasOwnProperty(key)) {
+        if (!Object.hasOwn(object, key)) {
             if (controlObj[key] === null) continue;
             else return false;
         }
diff --git a/public/scripts/extensions/translate/index.js b/public/scripts/extensions/translate/index.js
index dad4dcd40..61e5b03b3 100644
--- a/public/scripts/extensions/translate/index.js
+++ b/public/scripts/extensions/translate/index.js
@@ -151,7 +151,7 @@ function showKeysButton() {
 
 function loadSettings() {
     for (const key in defaultSettings) {
-        if (!extension_settings.translate.hasOwnProperty(key)) {
+        if (!Object.hasOwn(extension_settings.translate, key)) {
             extension_settings.translate[key] = defaultSettings[key];
         }
     }
diff --git a/public/scripts/extensions/tts/system.js b/public/scripts/extensions/tts/system.js
index b87aa2aad..9c1af3b7e 100644
--- a/public/scripts/extensions/tts/system.js
+++ b/public/scripts/extensions/tts/system.js
@@ -46,7 +46,7 @@ var speechUtteranceChunker = function (utt, settings, callback) {
         newUtt = new SpeechSynthesisUtterance(chunk);
         var x;
         for (x in utt) {
-            if (utt.hasOwnProperty(x) && x !== 'text') {
+            if (Object.hasOwn(utt, x) && x !== 'text') {
                 newUtt[x] = utt[x];
             }
         }
diff --git a/public/scripts/extensions/vectors/index.js b/public/scripts/extensions/vectors/index.js
index 93eaf5303..5e243616c 100644
--- a/public/scripts/extensions/vectors/index.js
+++ b/public/scripts/extensions/vectors/index.js
@@ -145,7 +145,7 @@ const hashCache = {};
  */
 function getStringHash(str) {
     // Check if the hash is already in the cache
-    if (hashCache.hasOwnProperty(str)) {
+    if (Object.hasOwn(hashCache, str)) {
         return hashCache[str];
     }
 
diff --git a/public/scripts/kai-settings.js b/public/scripts/kai-settings.js
index 96bf8502e..80f9e3852 100644
--- a/public/scripts/kai-settings.js
+++ b/public/scripts/kai-settings.js
@@ -87,11 +87,11 @@ export function loadKoboldSettings(preset) {
         $(slider.counterId).val(formattedValue);
     }
 
-    if (preset.hasOwnProperty('streaming_kobold')) {
+    if (Object.hasOwn(preset, 'streaming_kobold')) {
         kai_settings.streaming_kobold = preset.streaming_kobold;
         $('#streaming_kobold').prop('checked', kai_settings.streaming_kobold);
     }
-    if (preset.hasOwnProperty('use_default_badwordsids')) {
+    if (Object.hasOwn(preset, 'use_default_badwordsids')) {
         kai_settings.use_default_badwordsids = preset.use_default_badwordsids;
         $('#use_default_badwordsids').prop('checked', kai_settings.use_default_badwordsids);
     }
diff --git a/public/scripts/openai.js b/public/scripts/openai.js
index 622754841..d3de0660d 100644
--- a/public/scripts/openai.js
+++ b/public/scripts/openai.js
@@ -2832,7 +2832,8 @@ async function onLogitBiasPresetImportFileChange(e) {
 
     for (const entry of importedFile) {
         if (typeof entry == 'object' && entry !== null) {
-            if (entry.hasOwnProperty('text') && entry.hasOwnProperty('value')) {
+            if (Object.hasOwn(entry, 'text') &&
+                Object.hasOwn(entry, 'value')) {
                 validEntries.push(entry);
             }
         }
diff --git a/public/scripts/preset-manager.js b/public/scripts/preset-manager.js
index 27eec79b6..f2320b149 100644
--- a/public/scripts/preset-manager.js
+++ b/public/scripts/preset-manager.js
@@ -270,7 +270,7 @@ class PresetManager {
         const settings = Object.assign({}, getSettingsByApiId(this.apiId));
 
         for (const key of filteredKeys) {
-            if (settings.hasOwnProperty(key)) {
+            if (Object.hasOwn(settings, key)) {
                 delete settings[key];
             }
         }
diff --git a/public/scripts/slash-commands.js b/public/scripts/slash-commands.js
index d13e84221..8db07a93f 100644
--- a/public/scripts/slash-commands.js
+++ b/public/scripts/slash-commands.js
@@ -58,7 +58,7 @@ class SlashCommandParser {
     addCommand(command, callback, aliases, helpString = '', interruptsGeneration = false, purgeFromMessage = true) {
         const fnObj = { callback, helpString, interruptsGeneration, purgeFromMessage };
 
-        if ([command, ...aliases].some(x => this.commands.hasOwnProperty(x))) {
+        if ([command, ...aliases].some(x => Object.hasOwn(this.commands, x))) {
             console.trace('WARN: Duplicate slash command registered!');
         }
 
diff --git a/public/scripts/world-info.js b/public/scripts/world-info.js
index 6404ec4e3..1330593bd 100644
--- a/public/scripts/world-info.js
+++ b/public/scripts/world-info.js
@@ -778,7 +778,7 @@ function setOriginalDataValue(data, uid, key, value) {
         for (let i = 0; i < keyParts.length - 1; i++) {
             const part = keyParts[i];
 
-            if (!currentObject.hasOwnProperty(part)) {
+            if (!Object.hasOwn(currentObject, part)) {
                 currentObject[part] = {};
             }
 
diff --git a/src/classify.js b/src/classify.js
index d9a5a72a7..8773deb28 100644
--- a/src/classify.js
+++ b/src/classify.js
@@ -24,7 +24,7 @@ function registerEndpoints(app, jsonParser) {
             const { text } = req.body;
 
             async function getResult(text) {
-                if (cacheObject.hasOwnProperty(text)) {
+                if (Object.hasOwn(cacheObject, text)) {
                     return cacheObject[text];
                 } else {
                     const module = await import('./transformers.mjs');
diff --git a/src/validator/TavernCardValidator.js b/src/validator/TavernCardValidator.js
index dabd0b595..b3093b1de 100644
--- a/src/validator/TavernCardValidator.js
+++ b/src/validator/TavernCardValidator.js
@@ -48,7 +48,7 @@ class TavernCardValidator {
     validateV1() {
         const requiredFields = ['name', 'description', 'personality', 'scenario', 'first_mes', 'mes_example'];
         return requiredFields.every(field => {
-            if (!this.card.hasOwnProperty(field)) {
+            if (!Object.hasOwn(this.card, field)) {
                 this.#lastValidationError = field;
                 return false;
             }
@@ -94,7 +94,7 @@ class TavernCardValidator {
 
         const requiredFields = ['name', 'description', 'personality', 'scenario', 'first_mes', 'mes_example', 'creator_notes', 'system_prompt', 'post_history_instructions', 'alternate_greetings', 'tags', 'creator', 'character_version', 'extensions'];
         const isAllRequiredFieldsPresent = requiredFields.every(field => {
-            if (!data.hasOwnProperty(field)) {
+            if (!Object.hasOwn(data, field)) {
                 this.#lastValidationError = `data.${field}`;
                 return false;
             }
@@ -113,7 +113,7 @@ class TavernCardValidator {
 
         const requiredFields = ['extensions', 'entries'];
         const isAllRequiredFieldsPresent = requiredFields.every(field => {
-            if (!characterBook.hasOwnProperty(field)) {
+            if (!Object.hasOwn(characterBook, field)) {
                 this.#lastValidationError = `data.character_book.${field}`;
                 return false;
             }