diff --git a/lib/update-v8/constants.js b/lib/update-v8/constants.js
index d8ed501f..d12a0b6a 100644
--- a/lib/update-v8/constants.js
+++ b/lib/update-v8/constants.js
@@ -41,6 +41,9 @@ const fp16Ignore = `!/third_party/fp16
 const fastFloatReplace = `/third_party/fast_float/src/*
 !/third_party/fast_float/src/include`;
 
+const highwayIgnore = `/third_party/highway/src/*
+!/third_party/highway/src/hwy`;
+
 export const v8Deps = [
   {
     name: 'trace_event',
@@ -115,5 +118,14 @@ export const v8Deps = [
       replace: fastFloatReplace
     },
     since: 130
+  },
+  {
+    name: 'highway',
+    repo: 'third_party/highway/src',
+    gitignore: {
+      match: '/third_party/highway/src',
+      replace: highwayIgnore
+    },
+    since: 134
   }
 ];