diff --git a/lib/update-v8/constants.js b/lib/update-v8/constants.js
index d12a0b6a..b4daef2e 100644
--- a/lib/update-v8/constants.js
+++ b/lib/update-v8/constants.js
@@ -127,5 +127,11 @@ export const v8Deps = [
       replace: highwayIgnore
     },
     since: 134
+  },
+  {
+    name: 'simdutf',
+    repo: 'third_party/simdutf',
+    gitignore: '!/third_party/simdutf',
+    since: 134
   }
 ];