diff --git a/package.json b/package.json
index 00301bef50..30a16036ff 100644
--- a/package.json
+++ b/package.json
@@ -91,7 +91,7 @@
         "classnames": "^2.2.6",
         "commonmark": "^0.31.0",
         "counterpart": "^0.18.6",
-        "css-tree": "^2.3.1",
+        "css-tree": "^3.0.0",
         "diff-dom": "^5.0.0",
         "diff-match-patch": "^1.0.5",
         "emojibase-regex": "15.3.2",
diff --git a/yarn.lock b/yarn.lock
index e4b851b610..5bb6e4c0ac 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4059,6 +4059,14 @@ css-tree@2.3.1, css-tree@^2.3.1:
     mdn-data "2.0.30"
     source-map-js "^1.0.1"
 
+css-tree@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-3.0.0.tgz#079c7b87e465a28cedbc826502f9a227213db0f3"
+  integrity sha512-o88DVQ6GzsABn1+6+zo2ct801dBO5OASVyxbbvA2W20ue2puSh/VOuqUj90eUeMSX/xqGqBmOKiRQN7tJOuBXw==
+  dependencies:
+    mdn-data "2.10.0"
+    source-map-js "^1.0.1"
+
 css.escape@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/css.escape/-/css.escape-1.5.1.tgz#42e27d4fa04ae32f931a4b4d4191fa9cddee97cb"
@@ -7070,6 +7078,11 @@ mdn-data@2.0.30:
   resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-2.0.30.tgz#ce4df6f80af6cfbe218ecd5c552ba13c4dfa08cc"
   integrity sha512-GaqWWShW4kv/G9IEucWScBx9G1/vsFZZJUO+tD26M8J8z3Kw5RDQjaoZe03YAClgeS/SWPOcb4nkFBTEi5DUEA==
 
+mdn-data@2.10.0:
+  version "2.10.0"
+  resolved "https://registry.yarnpkg.com/mdn-data/-/mdn-data-2.10.0.tgz#701da407f8fbc7a42aa0ba0c149ec897daef8986"
+  integrity sha512-qq7C3EtK3yJXMwz1zAab65pjl+UhohqMOctTgcqjLOWABqmwj+me02LSsCuEUxnst9X1lCBpoE0WArGKgdGDzw==
+
 mdurl@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mdurl/-/mdurl-1.0.1.tgz#fe85b2ec75a59037f2adfec100fd6c601761152e"