diff --git a/patches/chromium/.patches b/patches/chromium/.patches
index 83beed40b9b75..6ef2ec3dacb01 100644
--- a/patches/chromium/.patches
+++ b/patches/chromium/.patches
@@ -162,3 +162,4 @@ cherry-pick-c69dddfe1cde.patch
 cherry-pick-8af66de55aad.patch
 move_networkstateobserver_from_document_to_window.patch
 cherry-pick-0894af410c4e.patch
+disable_quictransport_explicitly_in_the_network_service.patch
diff --git a/patches/chromium/disable_quictransport_explicitly_in_the_network_service.patch b/patches/chromium/disable_quictransport_explicitly_in_the_network_service.patch
new file mode 100644
index 0000000000000..bce952dffb40d
--- /dev/null
+++ b/patches/chromium/disable_quictransport_explicitly_in_the_network_service.patch
@@ -0,0 +1,51 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Victor Vasiliev <vasilvv@chromium.org>
+Date: Tue, 26 Oct 2021 04:50:35 +0000
+Subject: Disable QuicTransport explicitly in the Network Service
+
+(cherry picked from commit b1997bdadcda9738a19773f82605f65832acedac)
+
+Bug: 1260940
+Change-Id: I6689fbce8115eda19e68414d7c03691704749b17
+Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3242207
+Auto-Submit: Victor Vasiliev <vasilvv@chromium.org>
+Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
+Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
+Cr-Commit-Position: refs/branch-heads/4606@{#1411}
+Cr-Branched-From: 35b0d5a9dc8362adfd44e2614f0d5b7402ef63d0-refs/heads/master@{#911515}
+
+diff --git a/services/network/quic_transport.cc b/services/network/quic_transport.cc
+index df262796d9021ed478e1154e1f327ac51fe5885e..27fe2b4d2ab9f77b7d68afac57bde6b3b4d7f8e0 100644
+--- a/services/network/quic_transport.cc
++++ b/services/network/quic_transport.cc
+@@ -27,7 +27,7 @@ net::WebTransportParameters CreateParameters(
+     const std::vector<mojom::QuicTransportCertificateFingerprintPtr>&
+         fingerprints) {
+   net::WebTransportParameters params;
+-  params.enable_quic_transport = true;
++  params.enable_quic_transport = false;
+   params.enable_web_transport_http3 = true;
+ 
+   for (const auto& fingerprint : fingerprints) {
+diff --git a/services/network/quic_transport_unittest.cc b/services/network/quic_transport_unittest.cc
+index ecb4f81e4ad947275dcdb1bcdfba1d3295947322..10ff49baaabdc1fce54376fd01ebde8f10c6f9d3 100644
+--- a/services/network/quic_transport_unittest.cc
++++ b/services/network/quic_transport_unittest.cc
+@@ -359,7 +359,7 @@ struct PrintStringPiece {
+ 
+ INSTANTIATE_TEST_SUITE_P(QuicTransportTests,
+                          QuicTransportTest,
+-                         testing::Values("quic-transport", "https"),
++                         testing::Values("https"),
+                          PrintStringPiece());
+ 
+ TEST_P(QuicTransportTest, ConnectSuccessfully) {
+@@ -671,7 +671,7 @@ class QuicTransportWithCustomCertificateTest : public QuicTransportTest {
+ 
+ INSTANTIATE_TEST_SUITE_P(QuicTransportWithCustomCertificateTests,
+                          QuicTransportWithCustomCertificateTest,
+-                         testing::Values("quic-transport", "https"),
++                         testing::Values("https"),
+                          PrintStringPiece());
+ 
+ TEST_P(QuicTransportWithCustomCertificateTest, WithValidFingerprint) {
diff --git a/patches/v8/.patches b/patches/v8/.patches
index 742770044f2ca..5d2020f109501 100644
--- a/patches/v8/.patches
+++ b/patches/v8/.patches
@@ -19,3 +19,4 @@ regexp_remove_the_stack_parameter_from_regexp_matchers.patch
 cherry-pick-5c4acf2ae64a.patch
 cherry-pick-6de4e210688e.patch
 cherry-pick-014e1f857c33.patch
+cherry-pick-feef10137b16.patch
diff --git a/patches/v8/cherry-pick-feef10137b16.patch b/patches/v8/cherry-pick-feef10137b16.patch
new file mode 100644
index 0000000000000..c9a374af0661a
--- /dev/null
+++ b/patches/v8/cherry-pick-feef10137b16.patch
@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Toon Verwaest <verwaest@chromium.org>
+Date: Wed, 27 Oct 2021 11:02:06 +0200
+Subject: Merged: [runtime] Check if we have a pending exception before
+ returning it
+
+Revision: be55c16e50e714475034b00ed2682f0813794d15
+
+BUG=chromium:1263462
+NOTRY=true
+NOPRESUBMIT=true
+NOTREECHECKS=true
+R=cbruni@chromium.org
+
+Change-Id: Ib7de676fe614403674fcd2745c574f7e91ded23f
+Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3247033
+Reviewed-by: Camillo Bruni <cbruni@chromium.org>
+Cr-Commit-Position: refs/branch-heads/9.4@{#52}
+Cr-Branched-From: 3b51863bc25492549a8bf96ff67ce481b1a3337b-refs/heads/9.4.146@{#1}
+Cr-Branched-From: 2890419fc8fb9bdb507fdd801d76fa7dd9f022b5-refs/heads/master@{#76233}
+
+diff --git a/src/execution/isolate-inl.h b/src/execution/isolate-inl.h
+index 96ea770e65b48dbecf7422b49ef4f8d2f0cfe2d0..3486925aed54f03db13554763a6146134e83d2bb 100644
+--- a/src/execution/isolate-inl.h
++++ b/src/execution/isolate-inl.h
+@@ -35,7 +35,7 @@ NativeContext Isolate::raw_native_context() {
+ }
+ 
+ Object Isolate::pending_exception() {
+-  DCHECK(has_pending_exception());
++  CHECK(has_pending_exception());
+   DCHECK(!thread_local_top()->pending_exception_.IsException(this));
+   return thread_local_top()->pending_exception_;
+ }