diff --git a/README.md b/README.md
index 95bace7c..22acb083 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Rusty V8 Binding
 
-V8 Version: 9.2.230.14
+V8 Version: 9.3.345.3
 
 [![ci](https://github.com/denoland/rusty_v8/workflows/ci/badge.svg?branch=main)](https://github.com/denoland/rusty_v8/actions)
 [![crates](https://img.shields.io/crates/v/rusty_v8.svg)](https://crates.io/crates/rusty_v8)
diff --git a/v8 b/v8
index 2afd79e2..9c42a33a 160000
--- a/v8
+++ b/v8
@@ -1 +1 @@
-Subproject commit 2afd79e25f67c3526211291526bfbb3125c3ae16
+Subproject commit 9c42a33a3ed1006ee56cfa22f1421dbf81c3ada2