diff --git a/package.json b/package.json
index 627bdce47..c0174a12b 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-html": "^7.1.0",
     "eslint-plugin-import": "^2.25.3",
-    "eslint-plugin-lit-a11y": "^2.2.0",
+    "eslint-plugin-lit-a11y": "^4.0.0",
     "eslint-plugin-no-only-tests": "^3.0.0",
     "eslint-plugin-wc": "^1.3.2",
     "gh-pages": "^4.0.0",
diff --git a/yarn.lock b/yarn.lock
index 4cad38148..a4eb85cc0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1003,6 +1003,13 @@ aria-query@^4.2.2:
     "@babel/runtime" "^7.10.2"
     "@babel/runtime-corejs3" "^7.10.2"
 
+aria-query@^5.1.3:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/aria-query/-/aria-query-5.3.0.tgz#650c569e41ad90b51b3d7df5e5eed1c7549c103e"
+  integrity sha512-b0P0sZPKtyu8HkeRAfCq0IfURZK+SuwMjY1UXGBU27wpAiTwQAIlq56IbIO+ytk/JjS1fMR14ee5WBBfKi5J6A==
+  dependencies:
+    dequal "^2.0.3"
+
 array-back@^3.0.1, array-back@^3.1.0:
   version "3.1.0"
   resolved "https://registry.npmjs.org/array-back/-/array-back-3.1.0.tgz"
@@ -1514,6 +1521,11 @@ dependency-tree@^8.1.1:
     precinct "^8.0.0"
     typescript "^3.9.7"
 
+dequal@^2.0.3:
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/dequal/-/dequal-2.0.3.tgz#2644214f1997d39ed0ee0ece72335490a7ac67be"
+  integrity sha512-0je+qPKHEMohvfRTCEo3CrPG6cAzAYgmzKyxRiYSSDkS6eGJdyVJm7WaYA5ECaAD9wLB2T4EEeymA5aFVcYXCA==
+
 destroy@^1.0.4:
   version "1.2.0"
   resolved "https://registry.npmjs.org/destroy/-/destroy-1.2.0.tgz"
@@ -1713,6 +1725,11 @@ email-addresses@^3.0.1:
   resolved "https://registry.npmjs.org/email-addresses/-/email-addresses-3.1.0.tgz"
   integrity sha512-k0/r7GrWVL32kZlGwfPNgB2Y/mMXVTq/decgLczm/j34whdaspNrZO8CnXPf1laaHxI6ptUlsnAxN+UAPw+fzg==
 
+emoji-regex@^10.2.1:
+  version "10.3.0"
+  resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-10.3.0.tgz#76998b9268409eb3dae3de989254d456e70cfe23"
+  integrity sha512-QpLs9D9v9kArv4lfDEgg1X/gN5XLnf/A6l9cs8SPZLRZR3ZkY9+kwIQTxm+fsSej5UMYGE8fdoaZVIBlqG0XTw==
+
 emoji-regex@^8.0.0:
   version "8.0.0"
   resolved "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz"
@@ -1758,6 +1775,11 @@ entities@^4.2.0, entities@^4.3.0:
   resolved "https://registry.npmjs.org/entities/-/entities-4.4.0.tgz"
   integrity sha512-oYp7156SP8LkeGD0GF85ad1X9Ai79WtRsZ2gxJqtBuzH+98YUV6jkHEKlZkMbcrjJjIVJNIDP/3WL9wQkoPbWA==
 
+entities@^4.4.0:
+  version "4.5.0"
+  resolved "https://registry.yarnpkg.com/entities/-/entities-4.5.0.tgz#5d268ea5e7113ec74c4d033b79ea5a35a488fb48"
+  integrity sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==
+
 errorstacks@^2.2.0:
   version "2.4.0"
   resolved "https://registry.npmjs.org/errorstacks/-/errorstacks-2.4.0.tgz"
@@ -2035,10 +2057,10 @@ eslint-plugin-import@^2.25.3, eslint-plugin-import@^2.26.0:
     resolve "^1.22.0"
     tsconfig-paths "^3.14.1"
 
-eslint-plugin-lit-a11y@^2.2.0:
-  version "2.2.0"
-  resolved "https://registry.npmjs.org/eslint-plugin-lit-a11y/-/eslint-plugin-lit-a11y-2.2.0.tgz"
-  integrity sha512-1Vy9mR7UGigPnOHj5qJMU3uEK+Qul7dQOg9I6YKEYrw3C3HUx1FS/FbICjZI+n/v+2qvvJhw+5Tghuld2QWUJw==
+eslint-plugin-lit-a11y@^2.2.2:
+  version "2.2.2"
+  resolved "https://registry.npmjs.org/eslint-plugin-lit-a11y/-/eslint-plugin-lit-a11y-2.2.2.tgz"
+  integrity sha512-9dJfnwPOOA6x7Ow/+GFoOt1hr4mSNrF6KBWQ2OFFAY/9aBYtyBX4fRbpxqS2y3ld66/bjWru2+LGWgNVr5GxzQ==
   dependencies:
     aria-query "^4.2.2"
     axe-core "^4.3.3"
@@ -2052,20 +2074,20 @@ eslint-plugin-lit-a11y@^2.2.0:
     parse5-htmlparser2-tree-adapter "^6.0.1"
     requireindex "~1.2.0"
 
-eslint-plugin-lit-a11y@^2.2.2:
-  version "2.2.2"
-  resolved "https://registry.npmjs.org/eslint-plugin-lit-a11y/-/eslint-plugin-lit-a11y-2.2.2.tgz"
-  integrity sha512-9dJfnwPOOA6x7Ow/+GFoOt1hr4mSNrF6KBWQ2OFFAY/9aBYtyBX4fRbpxqS2y3ld66/bjWru2+LGWgNVr5GxzQ==
+eslint-plugin-lit-a11y@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-lit-a11y/-/eslint-plugin-lit-a11y-4.1.0.tgz#1d12239e539641831f02a68dc6ab6d8cee46ab16"
+  integrity sha512-tJUYhKUZ1+NwOBzNHRX7ZETvGgMxWA+m9TsM23oN1qp4hQacTYBafeOhXHh6zyGnHaBIWzmCxW/G7doHeetkAw==
   dependencies:
-    aria-query "^4.2.2"
+    aria-query "^5.1.3"
     axe-core "^4.3.3"
     axobject-query "^2.2.0"
     dom5 "^3.0.1"
-    emoji-regex "^9.2.0"
+    emoji-regex "^10.2.1"
     eslint-plugin-lit "^1.6.0"
     eslint-rule-extender "0.0.1"
     language-tags "^1.0.5"
-    parse5 "^5.1.1"
+    parse5 "^7.1.2"
     parse5-htmlparser2-tree-adapter "^6.0.1"
     requireindex "~1.2.0"
 
@@ -3628,6 +3650,13 @@ parse5@^6.0.1:
   resolved "https://registry.npmjs.org/parse5/-/parse5-6.0.1.tgz"
   integrity sha512-Ofn/CTFzRGTTxwpNEs9PP93gXShHcTq255nzRYSKe8AkVpZY7e1fpmTfOyoIvjP5HG7Z2ZM7VS9PPhQGW2pOpw==
 
+parse5@^7.1.2:
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/parse5/-/parse5-7.1.2.tgz#0736bebbfd77793823240a23b7fc5e010b7f8e32"
+  integrity sha512-Czj1WaSVpaoj0wbhMzLmWD69anp2WH7FXMB9n1Sy8/ZFF9jolSQVMu1Ij5WIyGmcBmhk7EOndpO4mIpihVqAXw==
+  dependencies:
+    entities "^4.4.0"
+
 parseurl@^1.3.2:
   version "1.3.3"
   resolved "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz"