diff --git a/.eslintrc.yaml b/.eslintrc.yaml
index 90c932f..ae06c40 100644
--- a/.eslintrc.yaml
+++ b/.eslintrc.yaml
@@ -76,8 +76,6 @@ rules:
     - error
     - props: true
   
-  no-prototype-builtins: warn
-  
   # https://eslint.org/docs/rules/no-return-assign
   no-return-assign: error
 
diff --git a/src/Stream.js b/src/Stream.js
index 83cccdb..4163b72 100644
--- a/src/Stream.js
+++ b/src/Stream.js
@@ -1,5 +1,5 @@
 import * as messages from './messages';
-import { base64URLEncode, getLDHeaders } from './utils';
+import { base64URLEncode, getLDHeaders, objectHasOwnProperty } from './utils';
 
 // The underlying event source implementation is abstracted via the platform object, which should
 // have these three properties:
@@ -109,7 +109,7 @@ export default function Stream(platform, config, environment, diagnosticsAccumul
 
       es = platform.eventSourceFactory(url, options);
       for (const key in handlers) {
-        if (handlers.hasOwnProperty(key)) {
+        if (objectHasOwnProperty(handlers, key)) {
           es.addEventListener(key, handlers[key]);
         }
       }
diff --git a/src/index.js b/src/index.js
index de45825..8d07fe9 100644
--- a/src/index.js
+++ b/src/index.js
@@ -258,7 +258,7 @@ export function initialize(env, user, specifiedOptions, platform, extraOptionDef
   function variationDetailInternal(key, defaultValue, sendEvent, includeReasonInEvent) {
     let detail;
 
-    if (flags && flags.hasOwnProperty(key) && flags[key] && !flags[key].deleted) {
+    if (flags && utils.objectHasOwnProperty(flags, key) && flags[key] && !flags[key].deleted) {
       const flag = flags[key];
       detail = getFlagDetail(flag);
       if (flag.value === null || flag.value === undefined) {
@@ -294,7 +294,7 @@ export function initialize(env, user, specifiedOptions, platform, extraOptionDef
     }
 
     for (const key in flags) {
-      if (flags.hasOwnProperty(key)) {
+      if (utils.objectHasOwnProperty(flags, key)) {
         results[key] = variationDetailInternal(key, null, !options.sendEventsOnlyForVariation).value;
       }
     }
@@ -407,7 +407,7 @@ export function initialize(env, user, specifiedOptions, platform, extraOptionDef
     }
 
     for (const key in flags) {
-      if (flags.hasOwnProperty(key) && flags[key]) {
+      if (utils.objectHasOwnProperty(flags, key) && flags[key]) {
         if (newFlags[key] && !utils.deepEquals(newFlags[key].value, flags[key].value)) {
           changes[key] = { previous: flags[key].value, current: getFlagDetail(newFlags[key]) };
         } else if (!newFlags[key] || newFlags[key].deleted) {
@@ -416,7 +416,7 @@ export function initialize(env, user, specifiedOptions, platform, extraOptionDef
       }
     }
     for (const key in newFlags) {
-      if (newFlags.hasOwnProperty(key) && newFlags[key] && (!flags[key] || flags[key].deleted)) {
+      if (utils.objectHasOwnProperty(newFlags, key) && newFlags[key] && (!flags[key] || flags[key].deleted)) {
         changes[key] = { current: getFlagDetail(newFlags[key]) };
       }
     }
diff --git a/src/utils.js b/src/utils.js
index e9189f0..37f6b1a 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -85,7 +85,7 @@ export function wrapPromiseCallback(promise, callback) {
 export function transformValuesToVersionedValues(flags) {
   const ret = {};
   for (const key in flags) {
-    if (flags.hasOwnProperty(key)) {
+    if (objectHasOwnProperty(flags, key)) {
       ret[key] = { value: flags[key], version: 0 };
     }
   }
@@ -98,7 +98,7 @@ export function transformValuesToVersionedValues(flags) {
 export function transformVersionedValuesToValues(flagsState) {
   const ret = {};
   for (const key in flagsState) {
-    if (flagsState.hasOwnProperty(key)) {
+    if (objectHasOwnProperty(flagsState, key)) {
       ret[key] = flagsState[key].value;
     }
   }
@@ -169,6 +169,10 @@ export function extend(...objects) {
   return objects.reduce((acc, obj) => ({ ...acc, ...obj }), {});
 }
 
+export function objectHasOwnProperty(object, name) {
+  return Object.prototype.hasOwnProperty.call(object, name);
+}
+
 export function sanitizeUser(user) {
   if (!user) {
     return user;