diff --git a/package.json b/package.json
index 15b998c16a30..469b8084ca52 100644
--- a/package.json
+++ b/package.json
@@ -144,7 +144,7 @@
     "unist-builder": "^4.0.0",
     "unist-util-visit": "^5.0.0",
     "web-features": "^0.5.1",
-    "web-specs": "^2.77.0"
+    "web-specs": "^2.78.0"
   },
   "devDependencies": {
     "@babel/core": "^7.23.9",
diff --git a/yarn.lock b/yarn.lock
index 92af1bf575b5..e8818a5753eb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -15408,10 +15408,10 @@ web-namespaces@^2.0.0:
   resolved "https://registry.yarnpkg.com/web-namespaces/-/web-namespaces-2.0.1.tgz#1010ff7c650eccb2592cebeeaf9a1b253fd40692"
   integrity sha512-bKr1DkiNa2krS7qxNtdrtHAmzuYGFQLiQ13TsorsdT6ULTkPLKuu5+GsFpDlg6JFjUTwX2DyhMPG2be8uPrqsQ==
 
-web-specs@^2.77.0:
-  version "2.77.0"
-  resolved "https://registry.yarnpkg.com/web-specs/-/web-specs-2.77.0.tgz#5f8d39b89145229b3eb5f0df26a283808757ebb0"
-  integrity sha512-aETwFYc3QqeJEaNI2O+VQzZFUpaldQg1nsRX76Mi/0w5qGKbLU4TXjpHi31xHjnG9K90rXxQKPCyc8efONWOqg==
+web-specs@^2.78.0:
+  version "2.78.0"
+  resolved "https://registry.yarnpkg.com/web-specs/-/web-specs-2.78.0.tgz#a7777129658af8fd88d8af82a368073ad2247bf3"
+  integrity sha512-lQe7YnMF/KYTtvxwcghbrhDNGQq/1jdhJHbtMz2TF/4Q8LOhDjqhgQHCuwLNLThuj04JgVABBbLs93eNz6nFEQ==
 
 web-streams-polyfill@4.0.0-beta.3:
   version "4.0.0-beta.3"