diff --git a/tools/auto_update_v8.ts b/tools/auto_update_v8.ts
index f75a7111..4e045a17 100644
--- a/tools/auto_update_v8.ts
+++ b/tools/auto_update_v8.ts
@@ -1,4 +1,4 @@
-const V8_TRACKING_BRANCH = "10.4-lkgr-denoland";
+const V8_TRACKING_BRANCH = "10.5-lkgr-denoland";
 const AUTOROLL_BRANCH = "autoroll2";
 
 function extractVersion() {