diff --git a/README.md b/README.md
index acff2069..9fc4628c 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 
 DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG.
 
-It's also very simple to use and get started with. DOMPurify was [started in February 2014](https://github.com/cure53/DOMPurify/commit/a630922616927373485e0e787ab19e73e3691b2b) and, meanwhile, has reached version **v3.2.1**.
+It's also very simple to use and get started with. DOMPurify was [started in February 2014](https://github.com/cure53/DOMPurify/commit/a630922616927373485e0e787ab19e73e3691b2b) and, meanwhile, has reached version **v3.2.2**.
 
 DOMPurify is written in JavaScript and works in all modern browsers (Safari (10+), Opera (15+), Edge, Firefox and Chrome - as well as almost anything else using Blink, Gecko or WebKit). It doesn't break on MSIE or other legacy browsers. It simply does nothing.
 
diff --git a/bower.json b/bower.json
index fc72979d..55a1e124 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "dompurify",
-  "version": "3.2.1",
+  "version": "3.2.2",
   "homepage": "https://github.com/cure53/DOMPurify",
   "author": "Cure53 <info@cure53.de>",
   "description": "A DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG",
diff --git a/dist/purify.cjs.d.ts b/dist/purify.cjs.d.ts
index 82878c89..7a812328 100644
--- a/dist/purify.cjs.d.ts
+++ b/dist/purify.cjs.d.ts
@@ -1,5 +1,5 @@
 /// <reference types="trusted-types" />
-/*! @license DOMPurify 3.2.1 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.1/LICENSE */
+/*! @license DOMPurify 3.2.2 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.2/LICENSE */
 
 /**
  * Configuration to control DOMPurify behavior.
diff --git a/dist/purify.cjs.js b/dist/purify.cjs.js
index ecbfe14e..4d4cd69b 100644
--- a/dist/purify.cjs.js
+++ b/dist/purify.cjs.js
@@ -1,4 +1,4 @@
-/*! @license DOMPurify 3.2.1 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.1/LICENSE */
+/*! @license DOMPurify 3.2.2 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.2/LICENSE */
 
 'use strict';
 
@@ -297,7 +297,7 @@ const _createHooksMap = function _createHooksMap() {
 function createDOMPurify() {
   let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
   const DOMPurify = root => createDOMPurify(root);
-  DOMPurify.version = '3.2.1';
+  DOMPurify.version = '3.2.2';
   DOMPurify.removed = [];
   if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) {
     // Not running in a browser, provide a factory function
@@ -779,8 +779,8 @@ function createDOMPurify() {
       });
     }
     element.removeAttribute(name);
-    // We void attribute values for unremovable "is"" attributes
-    if (name === 'is' && !ALLOWED_ATTR[name]) {
+    // We void attribute values for unremovable "is" attributes
+    if (name === 'is') {
       if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
         try {
           _forceRemove(element);
diff --git a/dist/purify.es.d.mts b/dist/purify.es.d.mts
index 31b8cfbe..0c341aa5 100644
--- a/dist/purify.es.d.mts
+++ b/dist/purify.es.d.mts
@@ -1,5 +1,5 @@
 /// <reference types="trusted-types" />
-/*! @license DOMPurify 3.2.1 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.1/LICENSE */
+/*! @license DOMPurify 3.2.2 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.2/LICENSE */
 
 /**
  * Configuration to control DOMPurify behavior.
diff --git a/dist/purify.es.mjs b/dist/purify.es.mjs
index 9c60e8ef..18590ce5 100644
--- a/dist/purify.es.mjs
+++ b/dist/purify.es.mjs
@@ -1,4 +1,4 @@
-/*! @license DOMPurify 3.2.1 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.1/LICENSE */
+/*! @license DOMPurify 3.2.2 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.2/LICENSE */
 
 const {
   entries,
@@ -295,7 +295,7 @@ const _createHooksMap = function _createHooksMap() {
 function createDOMPurify() {
   let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
   const DOMPurify = root => createDOMPurify(root);
-  DOMPurify.version = '3.2.1';
+  DOMPurify.version = '3.2.2';
   DOMPurify.removed = [];
   if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) {
     // Not running in a browser, provide a factory function
@@ -777,8 +777,8 @@ function createDOMPurify() {
       });
     }
     element.removeAttribute(name);
-    // We void attribute values for unremovable "is"" attributes
-    if (name === 'is' && !ALLOWED_ATTR[name]) {
+    // We void attribute values for unremovable "is" attributes
+    if (name === 'is') {
       if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
         try {
           _forceRemove(element);
diff --git a/dist/purify.js b/dist/purify.js
index c627696a..bd4cd4cc 100644
--- a/dist/purify.js
+++ b/dist/purify.js
@@ -1,4 +1,4 @@
-/*! @license DOMPurify 3.2.1 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.1/LICENSE */
+/*! @license DOMPurify 3.2.2 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.2/LICENSE */
 
 (function (global, factory) {
   typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
@@ -301,7 +301,7 @@
   function createDOMPurify() {
     let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
     const DOMPurify = root => createDOMPurify(root);
-    DOMPurify.version = '3.2.1';
+    DOMPurify.version = '3.2.2';
     DOMPurify.removed = [];
     if (!window || !window.document || window.document.nodeType !== NODE_TYPE.document) {
       // Not running in a browser, provide a factory function
@@ -783,8 +783,8 @@
         });
       }
       element.removeAttribute(name);
-      // We void attribute values for unremovable "is"" attributes
-      if (name === 'is' && !ALLOWED_ATTR[name]) {
+      // We void attribute values for unremovable "is" attributes
+      if (name === 'is') {
         if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
           try {
             _forceRemove(element);
diff --git a/dist/purify.min.js b/dist/purify.min.js
index eb5ebaf7..67443821 100644
--- a/dist/purify.min.js
+++ b/dist/purify.min.js
@@ -1,3 +1,3 @@
-/*! @license DOMPurify 3.2.1 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.2.1/LICENSE */
-!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).DOMPurify=t()}(this,(function(){"use strict";const{entries:e,setPrototypeOf:t,isFrozen:n,getPrototypeOf:o,getOwnPropertyDescriptor:r}=Object;let{freeze:i,seal:a,create:l}=Object,{apply:c,construct:s}="undefined"!=typeof Reflect&&Reflect;i||(i=function(e){return e}),a||(a=function(e){return e}),c||(c=function(e,t,n){return e.apply(t,n)}),s||(s=function(e,t){return new e(...t)});const u=b(Array.prototype.forEach),m=b(Array.prototype.pop),p=b(Array.prototype.push),f=b(String.prototype.toLowerCase),d=b(String.prototype.toString),h=b(String.prototype.match),g=b(String.prototype.replace),T=b(String.prototype.indexOf),y=b(String.prototype.trim),E=b(Object.prototype.hasOwnProperty),A=b(RegExp.prototype.test),_=(S=TypeError,function(){for(var e=arguments.length,t=new 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diff --git a/package-lock.json b/package-lock.json
index 588e0ae2..5b18f3f9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "dompurify",
-  "version": "3.2.1",
+  "version": "3.2.2",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "dompurify",
-      "version": "3.2.1",
+      "version": "3.2.2",
       "license": "(MPL-2.0 OR Apache-2.0)",
       "devDependencies": {
         "@babel/core": "^7.17.8",
diff --git a/package.json b/package.json
index 6b975ee0..b851b733 100644
--- a/package.json
+++ b/package.json
@@ -136,7 +136,7 @@
   },
   "name": "dompurify",
   "description": "DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It's written in JavaScript and works in all modern browsers (Safari, Opera (15+), Internet Explorer (10+), Firefox and Chrome - as well as almost anything else using Blink or WebKit). DOMPurify is written by security people who have vast background in web attacks and XSS. Fear not.",
-  "version": "3.2.1",
+  "version": "3.2.2",
   "directories": {
     "test": "test"
   },
diff --git a/src/purify.ts b/src/purify.ts
index 6d41c4c6..255d7ec1 100644
--- a/src/purify.ts
+++ b/src/purify.ts
@@ -856,8 +856,8 @@ function createDOMPurify(window: WindowLike = getGlobal()): DOMPurify {
 
     element.removeAttribute(name);
 
-    // We void attribute values for unremovable "is"" attributes
-    if (name === 'is' && !ALLOWED_ATTR[name]) {
+    // We void attribute values for unremovable "is" attributes
+    if (name === 'is') {
       if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
         try {
           _forceRemove(element);
diff --git a/website/index.html b/website/index.html
index 63636101..1a357a8c 100644
--- a/website/index.html
+++ b/website/index.html
@@ -2,7 +2,7 @@
 <html lang="en">
     <head>
         <meta charset="UTF-8">
-        <title>DOMPurify 3.2.1 "Typographer"</title>
+        <title>DOMPurify 3.2.2 "Monospace"</title>
         <script src="../dist/purify.min.js"></script>
         <!-- we don't actually need it - just to demo and test the $(html) sanitation -->
         <script src="//code.jquery.com/jquery-3.2.0.min.js"></script>
@@ -23,7 +23,7 @@
         </script>
     </head>
     <body>
-        <h4>DOMPurify 3.2.1 "Typographer"</h4>
+        <h4>DOMPurify 3.2.2 "Monospace"</h4>
         <p>
             <a href="http://badge.fury.io/js/dompurify" rel="nofollow"><img alt="npm version" src="https://badge.fury.io/js/dompurify.svg"></a>  
             <a target="_blank" rel="noopener noreferrer" href="https://github.com/cure53/DOMPurify/workflows/Build%20and%20Test/badge.svg?branch=main"><img src="https://github.com/cure53/DOMPurify/workflows/Build%20and%20Test/badge.svg?branch=main" alt="Build and Test"></a>