diff --git a/package-lock.json b/package-lock.json
index 023d5e7430..364f05eae5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,6 +32,7 @@
         "core-js": "3.41.0",
         "date-fns": "2.30.0",
         "dompurify": "2.5.8",
+        "element-closest-polyfill": "1.0.7",
         "epubjs": "0.3.93",
         "escape-html": "1.0.3",
         "fast-text-encoding": "1.0.6",
@@ -9696,6 +9697,11 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/element-closest-polyfill": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/element-closest-polyfill/-/element-closest-polyfill-1.0.7.tgz",
+      "integrity": "sha512-SX7RrUUEybUllkGjVf5XJR5I0Fl2L0iawK/caX/yJu94xW/WoRRD8Fky65gKpvqhU9PLBKOliIy4Ly2rDRzdUQ=="
+    },
     "node_modules/emoji-regex": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
@@ -32265,6 +32271,11 @@
       "integrity": "sha512-eHhqaja8tE/FNpIiBrvBjFV/SSKpyWHLvxuR9dPTdo+3V9ppdLmFB7ZZQ98qNovcngPLYIz0oOBF9P0FfZef5Q==",
       "dev": true
     },
+    "element-closest-polyfill": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/element-closest-polyfill/-/element-closest-polyfill-1.0.7.tgz",
+      "integrity": "sha512-SX7RrUUEybUllkGjVf5XJR5I0Fl2L0iawK/caX/yJu94xW/WoRRD8Fky65gKpvqhU9PLBKOliIy4Ly2rDRzdUQ=="
+    },
     "emoji-regex": {
       "version": "8.0.0",
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
diff --git a/package.json b/package.json
index 5d86090f26..7149a97079 100644
--- a/package.json
+++ b/package.json
@@ -98,6 +98,7 @@
     "core-js": "3.41.0",
     "date-fns": "2.30.0",
     "dompurify": "2.5.8",
+    "element-closest-polyfill": "1.0.7",
     "epubjs": "0.3.93",
     "escape-html": "1.0.3",
     "fast-text-encoding": "1.0.6",
diff --git a/src/lib/legacy/index.ts b/src/lib/legacy/index.ts
index d90a9e6846..d8dcf9539c 100644
--- a/src/lib/legacy/index.ts
+++ b/src/lib/legacy/index.ts
@@ -1,6 +1,7 @@
 import 'core-js/stable';
 import 'regenerator-runtime/runtime';
 import 'jquery';
+import 'element-closest-polyfill';
 import 'fast-text-encoding';
 import 'intersection-observer';
 import 'classlist.js';