diff --git a/common.gypi b/common.gypi
index c49e2494659bf2..971fd4ebdedbe7 100644
--- a/common.gypi
+++ b/common.gypi
@@ -37,7 +37,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.20',
+    'v8_embedder_string': '-node.21',
 
     ##### V8 defaults for Node.js #####
 
diff --git a/deps/v8/BUILD.gn b/deps/v8/BUILD.gn
index 68d92c3477bc2c..4f1615a031464d 100644
--- a/deps/v8/BUILD.gn
+++ b/deps/v8/BUILD.gn
@@ -1585,6 +1585,10 @@ config("toolchain") {
       # of `this` in capture-by-value lambdas and preventing a build roll which
       # enables C++20 (see https://crbug.com/1374227).
       "-Wno-deprecated",
+
+      # Fix build with older versions of GCC
+      # Ported from v8 bazel: https://crrev.com/c/3368869
+      "-Wno-stringop-overflow",
     ]
   }