diff --git a/build/deps/github_hashes/facebook/folly-rev.txt b/build/deps/github_hashes/facebook/folly-rev.txt
index ee26efe7..5889f9ec 100644
--- a/build/deps/github_hashes/facebook/folly-rev.txt
+++ b/build/deps/github_hashes/facebook/folly-rev.txt
@@ -1 +1 @@
-Subproject commit ef07b7666e6a580a936987fc0f8727c1c51cc374
+Subproject commit 836dffb4ee21609b98b6ab0ba2f0fae43f9c0097
diff --git a/build/deps/github_hashes/facebook/mvfst-rev.txt b/build/deps/github_hashes/facebook/mvfst-rev.txt
index 51b60012..c3488c04 100644
--- a/build/deps/github_hashes/facebook/mvfst-rev.txt
+++ b/build/deps/github_hashes/facebook/mvfst-rev.txt
@@ -1 +1 @@
-Subproject commit f98bd7649a1a604b2a8fa548e928ad046ec12ad4
+Subproject commit 36f0ef484140540a63c710c9336672dce4e37153
diff --git a/build/deps/github_hashes/facebook/proxygen-rev.txt b/build/deps/github_hashes/facebook/proxygen-rev.txt
index af7e2516..832aa506 100644
--- a/build/deps/github_hashes/facebook/proxygen-rev.txt
+++ b/build/deps/github_hashes/facebook/proxygen-rev.txt
@@ -1 +1 @@
-Subproject commit 7558747901d08465619ed67f6dc896cc9c2117d1
+Subproject commit 61b53870bbb2194335ff81781243171733019d11
diff --git a/build/deps/github_hashes/facebook/wangle-rev.txt b/build/deps/github_hashes/facebook/wangle-rev.txt
index 943daf78..d3b5bf9e 100644
--- a/build/deps/github_hashes/facebook/wangle-rev.txt
+++ b/build/deps/github_hashes/facebook/wangle-rev.txt
@@ -1 +1 @@
-Subproject commit dc6de26b8d5b34aa87ae1159f9e0c9a64c78386d
+Subproject commit 47656df19271f1323351f787a9f03e203ae4d9d2
diff --git a/build/deps/github_hashes/facebookincubator/fizz-rev.txt b/build/deps/github_hashes/facebookincubator/fizz-rev.txt
index b8b37ad1..6681272c 100644
--- a/build/deps/github_hashes/facebookincubator/fizz-rev.txt
+++ b/build/deps/github_hashes/facebookincubator/fizz-rev.txt
@@ -1 +1 @@
-Subproject commit 11216ba32d86478caedfcb73c6330f69052fecfd
+Subproject commit 2703f674e45ef4b8c647c1e2e0de08be1c2f07c0
diff --git a/moxygen/MoQFramer.cpp b/moxygen/MoQFramer.cpp
index fc85619b..e4def67c 100644
--- a/moxygen/MoQFramer.cpp
+++ b/moxygen/MoQFramer.cpp
@@ -3458,6 +3458,34 @@ folly::Expected<RequestError, ErrorCode> MoQFrameParser::parseRequestError(
   }
   requestError.reasonPhrase = std::move(reasonPhrase.value());
 
+  if (requestError.errorCode == RequestErrorCode::REDIRECT) {
+    if (getDraftMajorVersion(*version_) < 18) {
+      XLOG(DBG4) << "REDIRECT errorCode received on pre-v18 draft";
+      return folly::makeUnexpected(ErrorCode::PROTOCOL_VIOLATION);
+    }
+  }
+
+  if (getDraftMajorVersion(*version_) >= 18 &&
+      requestError.errorCode == RequestErrorCode::REDIRECT) {
+    Redirect redirect;
+
+    auto connectUri = parseFixedString(cursor, length);
+    if (!connectUri) {
+      XLOG(DBG4) << "parseRequestError: UNDERFLOW on Redirect Connect URI";
+      return folly::makeUnexpected(connectUri.error());
+    }
+    redirect.connectUri = std::move(connectUri.value());
+
+    auto fullTrackName = parseFullTrackName(cursor, length);
+    if (!fullTrackName) {
+      XLOG(DBG4) << "parseRequestError: error parsing Redirect Full Track Name";
+      return folly::makeUnexpected(fullTrackName.error());
+    }
+    redirect.fullTrackName = std::move(fullTrackName.value());
+
+    requestError.redirect = std::move(redirect);
+  }
+
   // Check for leftover bytes
   if (length > 0) {
     return folly::makeUnexpected(ErrorCode::PROTOCOL_VIOLATION);
@@ -5793,10 +5821,11 @@ WriteResult MoQFrameWriter::writeGoaway(
   writeFixedString(writeBuf, goaway.newSessionUri, size, error);
   if (getDraftMajorVersion(*version_) >= 18) {
     writeVarint(writeBuf, goaway.timeout, size, error);
+    // Per draft 18, Request ID is present only when GOAWAY is sent on the
+    // control stream. Callers signal request-stream GOAWAY by leaving
+    // requestID unset.
     if (goaway.requestID.has_value()) {
       writeVarint(writeBuf, goaway.requestID->value, size, error);
-    } else {
-      error = true;
     }
   }
   writeSize(sizePtr, size, error, *version_);
@@ -6099,6 +6128,18 @@ WriteResult MoQFrameWriter::writeRequestError(
       << "Invalid frameType passed to writeRequestError: "
       << static_cast<int>(frameType);
 
+  if (requestError.errorCode == RequestErrorCode::REDIRECT) {
+    if (getDraftMajorVersion(*version_) < 18) {
+      XLOG(ERR) << "REDIRECT errorCode is only valid for draft 18+, version="
+                << *version_;
+      return folly::makeUnexpected(quic::TransportErrorCode::INTERNAL_ERROR);
+    }
+    if (!requestError.redirect) {
+      XLOG(ERR) << "REDIRECT errorCode without a Redirect struct";
+      return folly::makeUnexpected(quic::TransportErrorCode::INTERNAL_ERROR);
+    }
+  }
+
   size_t size = 0;
   bool error = false;
   if (getDraftMajorVersion(*version_) > 14) {
@@ -6119,6 +6160,13 @@ WriteResult MoQFrameWriter::writeRequestError(
   }
   writeFixedString(writeBuf, requestError.reasonPhrase, size, error);
 
+  if (getDraftMajorVersion(*version_) >= 18 &&
+      requestError.errorCode == RequestErrorCode::REDIRECT) {
+    const Redirect& redirect = *requestError.redirect;
+    writeFixedString(writeBuf, redirect.connectUri, size, error);
+    writeFullTrackName(writeBuf, redirect.fullTrackName, size, error);
+  }
+
   writeSize(sizePtr, size, error, *version_);
   if (error) {
     return folly::makeUnexpected(quic::TransportErrorCode::INTERNAL_ERROR);
diff --git a/moxygen/MoQSession.cpp b/moxygen/MoQSession.cpp
index cab01240..6413df08 100644
--- a/moxygen/MoQSession.cpp
+++ b/moxygen/MoQSession.cpp
@@ -2154,9 +2154,7 @@ MoQSession::PendingRequestState::setError(
       return type_;
     }
     case FrameType::TRACK_STATUS: {
-      storage_.trackStatus_.setValue(
-          folly::makeUnexpected(TrackStatusError(
-              {error.requestID, error.errorCode, error.reasonPhrase})));
+      storage_.trackStatus_.setValue(folly::makeUnexpected(std::move(error)));
       return type_;
     }
     case FrameType::FETCH_ERROR: {
@@ -3876,6 +3874,43 @@ void MoQSession::onRequestError(RequestError error, FrameType frameType) {
       frameType = pendingState->getErrorFrameType();
     }
 
+    if (error.errorCode == RequestErrorCode::REDIRECT) {
+      using PRStateType = PendingRequestState::Type;
+      const auto pendingType = pendingState->type();
+      const bool isNamespaceScoped =
+          (pendingType == PRStateType::PUBLISH_NAMESPACE ||
+           pendingType == PRStateType::SUBSCRIBE_NAMESPACE);
+      const bool isRedirectable =
+          (pendingType == PRStateType::SUBSCRIBE_TRACK ||
+           pendingType == PRStateType::FETCH ||
+           pendingType == PRStateType::TRACK_STATUS || isNamespaceScoped);
+      if (!isRedirectable) {
+        XLOG(ERR) << "REDIRECT not permitted for pending request type="
+                  << static_cast<int>(pendingType) << " id=" << error.requestID
+                  << " sess=" << this;
+        close(SessionCloseErrorCode::PROTOCOL_VIOLATION);
+        return;
+      }
+      if (error.redirect) {
+        if (dir_ == MoQControlCodec::Direction::SERVER &&
+            !error.redirect->connectUri.empty()) {
+          XLOG(ERR) << "Server received REDIRECT with non-empty Connect URI"
+                    << " id=" << error.requestID << " sess=" << this;
+          close(SessionCloseErrorCode::PROTOCOL_VIOLATION);
+          return;
+        }
+        if (isNamespaceScoped &&
+            !error.redirect->fullTrackName.trackName.empty()) {
+          XLOG(ERR) << "Namespace-scoped REDIRECT has non-empty Track Name"
+                    << " id=" << error.requestID
+                    << " pendingType=" << static_cast<int>(pendingType)
+                    << " sess=" << this;
+          close(SessionCloseErrorCode::PROTOCOL_VIOLATION);
+          return;
+        }
+      }
+    }
+
     auto setErrorRes = pendingState->setError(error, frameType);
     if (setErrorRes.hasError()) {
       XLOG(ERR) << "setError failure id=" << error.requestID
@@ -6541,6 +6576,10 @@ WriteResult MessageReply::ok(const RequestOk& okMsg) {
 }
 
 WriteResult MessageReply::error(const SubscribeTracksError& errorMsg) {
+  if (errorMsg.errorCode == RequestErrorCode::REDIRECT) {
+    XLOG(ERR) << "REDIRECT not permitted in SUBSCRIBE_TRACKS error";
+    return folly::makeUnexpected(quic::TransportErrorCode::INTERNAL_ERROR);
+  }
   auto res = moqFrameWriter_.writeRequestError(
       replyContext_->writeBuf(), errorMsg, FrameType::REQUEST_ERROR);
   // After ERROR the publisher is done with this stream — FIN it.
diff --git a/moxygen/MoQSession.h b/moxygen/MoQSession.h
index 3a4a4e4a..c09cedfc 100644
--- a/moxygen/MoQSession.h
+++ b/moxygen/MoQSession.h
@@ -969,6 +969,10 @@ class MoQSession : public Subscriber,
       return getFrameType(false);
     }
 
+    Type type() const {
+      return type_;
+    }
+
     virtual folly::Expected<Type, folly::Unit> setError(
         RequestError error,
         FrameType frameType);
diff --git a/moxygen/MoQTypes.h b/moxygen/MoQTypes.h
index b387f926..576843d5 100644
--- a/moxygen/MoQTypes.h
+++ b/moxygen/MoQTypes.h
@@ -1405,6 +1405,11 @@ using SubscribeTracksOk = RequestOk;
 using PublishNamespaceOk = RequestOk;
 using SubscribeUpdateOk = RequestOk;
 
+struct Redirect {
+  std::string connectUri;
+  FullTrackName fullTrackName;
+};
+
 // Consolidated request error structure
 struct RequestError {
   RequestID requestID;
@@ -1415,6 +1420,8 @@ struct RequestError {
   // If the value is 0, the request SHOULD NOT be retried.
   // A value of 1 indicates the request can be retried immediately.
   std::optional<std::chrono::milliseconds> retryInterval = std::nullopt;
+  // Draft 18+: present only when errorCode == REDIRECT.
+  std::optional<Redirect> redirect = std::nullopt;
 };
 
 // Type aliases for backward compatibility
diff --git a/moxygen/moqtest/MoQTestClient.cpp b/moxygen/moqtest/MoQTestClient.cpp
index 9365c8c4..2ad8f921 100644
--- a/moxygen/moqtest/MoQTestClient.cpp
+++ b/moxygen/moqtest/MoQTestClient.cpp
@@ -189,7 +189,7 @@ folly::coro::Task<moxygen::TrackNamespace> MoQTestClient::fetch(
   receivingType_ = ReceivingType::FETCH;
   initializeExpecteds(params);
 
-  // Fetch to the reciever
+  // Fetch to the receiver
   auto res = co_await moqClient_->moqSession_->fetch(fetch, fetchReceiver_);
   moqClient_->moqSession_->drain();
   if (!res.hasError()) {
@@ -230,7 +230,7 @@ ObjectReceiverCallback::FlowControlState MoQTestClient::onObject(
     return ObjectReceiverCallback::FlowControlState::UNBLOCKED;
   }
 
-  // Adjust the expected data (If Still recieving data, leave unblocked)
+  // Adjust the expected data (If Still receiving data, leave unblocked)
   adjustExpected(params_, &objHeader);
   return ObjectReceiverCallback::FlowControlState::UNBLOCKED;
 }
diff --git a/moxygen/test/MoQFramerTest.cpp b/moxygen/test/MoQFramerTest.cpp
index 1e33e3db..536263c9 100644
--- a/moxygen/test/MoQFramerTest.cpp
+++ b/moxygen/test/MoQFramerTest.cpp
@@ -4778,6 +4778,159 @@ TEST_F(MoQFramerV18Test, SubscribeTracksForwardFalseSerializedAsParameter) {
   EXPECT_EQ(parsed->forward, false);
 }
 
+// Draft 18+ REQUEST_ERROR carries a Redirect structure when errorCode ==
+// REDIRECT. Verify round-trip of a fully-populated Redirect.
+TEST_F(MoQFramerV18Test, RequestErrorRedirectRoundtrip) {
+  RequestError requestError;
+  requestError.requestID = RequestID(7);
+  requestError.errorCode = RequestErrorCode::REDIRECT;
+  requestError.reasonPhrase = "moved";
+  requestError.retryInterval = std::chrono::milliseconds{1};
+  Redirect redirect;
+  redirect.connectUri = "https://relay.example.com/moq";
+  redirect.fullTrackName.trackNamespace =
+      TrackNamespace(std::vector<std::string>{"example.com", "live"});
+  redirect.fullTrackName.trackName = "alt-track";
+  requestError.redirect = redirect;
+
+  folly::IOBufQueue writeBuf{folly::IOBufQueue::cacheChainLength()};
+  ASSERT_TRUE(
+      writer_
+          .writeRequestError(writeBuf, requestError, FrameType::REQUEST_ERROR)
+          .hasValue());
+
+  auto serialized = writeBuf.move();
+  folly::io::Cursor cursor(serialized.get());
+  auto frameType = decodeMoQVarint(cursor);
+  ASSERT_TRUE(frameType.has_value());
+  EXPECT_EQ(frameType->first, folly::to_underlying(FrameType::REQUEST_ERROR));
+
+  auto bodyLen = frameLength(cursor);
+  auto parsed =
+      parser_.parseRequestError(cursor, bodyLen, FrameType::REQUEST_ERROR);
+  ASSERT_TRUE(parsed.hasValue());
+
+  EXPECT_EQ(parsed->requestID, requestError.requestID);
+  EXPECT_EQ(parsed->errorCode, RequestErrorCode::REDIRECT);
+  EXPECT_EQ(parsed->reasonPhrase, requestError.reasonPhrase);
+  EXPECT_EQ(parsed->retryInterval, requestError.retryInterval);
+  ASSERT_TRUE(parsed->redirect.has_value());
+  EXPECT_EQ(parsed->redirect->connectUri, redirect.connectUri);
+  EXPECT_EQ(
+      parsed->redirect->fullTrackName.trackNamespace,
+      redirect.fullTrackName.trackNamespace);
+  EXPECT_EQ(
+      parsed->redirect->fullTrackName.trackName,
+      redirect.fullTrackName.trackName);
+}
+
+// When errorCode == REDIRECT but no Redirect is supplied, the writer
+// must refuse — silently substituting an empty Redirect would hide a
+// caller bug and produce a misleading on-wire message. Callers that
+// genuinely want "reuse current session URI / original Full Track Name"
+// must set `redirect` to a default-constructed Redirect explicitly.
+TEST_F(MoQFramerV18Test, RequestErrorRedirectWithoutRedirectIsRejected) {
+  RequestError requestError;
+  requestError.requestID = RequestID(3);
+  requestError.errorCode = RequestErrorCode::REDIRECT;
+  requestError.reasonPhrase = "";
+  requestError.retryInterval = std::chrono::milliseconds{0};
+  // Intentionally leave requestError.redirect unset.
+
+  folly::IOBufQueue writeBuf{folly::IOBufQueue::cacheChainLength()};
+  EXPECT_FALSE(
+      writer_
+          .writeRequestError(writeBuf, requestError, FrameType::REQUEST_ERROR)
+          .hasValue());
+}
+
+// Per draft-ietf-moq-transport-18 §10.6.2, REDIRECT is only permitted in
+// response to SUBSCRIBE, FETCH, TRACK_STATUS, PUBLISH_NAMESPACE and
+// SUBSCRIBE_NAMESPACE. The framer does not know that original request
+// context for v18+ REQUEST_ERROR; session-layer validation handles it.
+TEST_F(MoQFramerV18Test, RequestErrorRedirectDoesNotValidateRequestType) {
+  RequestError requestError;
+  requestError.requestID = RequestID(1);
+  requestError.errorCode = RequestErrorCode::REDIRECT;
+  requestError.reasonPhrase = "";
+  requestError.retryInterval = std::chrono::milliseconds{0};
+  requestError.redirect = Redirect{};
+
+  folly::IOBufQueue writeBuf{folly::IOBufQueue::cacheChainLength()};
+
+  EXPECT_TRUE(
+      writer_
+          .writeRequestError(writeBuf, requestError, FrameType::PUBLISH_ERROR)
+          .hasValue());
+  EXPECT_TRUE(writer_
+                  .writeRequestError(
+                      writeBuf, requestError, FrameType::SUBSCRIBE_UPDATE)
+                  .hasValue());
+}
+
+// The parser only decodes REQUEST_ERROR bytes. It cannot decide whether a
+// REDIRECT is valid for the original request; session-layer enforcement handles
+// that using pending request state.
+TEST_F(MoQFramerV18Test, ParseRequestErrorDoesNotValidateRequestType) {
+  // Hand-craft a REQUEST_ERROR body with errorCode == REDIRECT and a
+  // valid Redirect payload.
+  RequestError requestError;
+  requestError.requestID = RequestID(42);
+  requestError.errorCode = RequestErrorCode::REDIRECT;
+  requestError.reasonPhrase = "moved";
+  requestError.retryInterval = std::chrono::milliseconds{0};
+  requestError.redirect = Redirect{};
+
+  folly::IOBufQueue writeBuf{folly::IOBufQueue::cacheChainLength()};
+  ASSERT_TRUE(
+      writer_.writeRequestError(writeBuf, requestError, FrameType::FETCH_ERROR)
+          .hasValue());
+
+  auto serialized = writeBuf.move();
+  folly::io::Cursor cursor(serialized.get());
+  ASSERT_TRUE(decodeMoQVarint(cursor).has_value()); // frame type
+  auto bodyLen = frameLength(cursor);
+
+  // Parsing the same bytes as if they were a PUBLISH_ERROR still succeeds:
+  // request-type redirect validation requires session context.
+  auto parsed =
+      parser_.parseRequestError(cursor, bodyLen, FrameType::PUBLISH_ERROR);
+  ASSERT_TRUE(parsed.hasValue());
+  EXPECT_EQ(parsed->errorCode, RequestErrorCode::REDIRECT);
+  EXPECT_TRUE(parsed->redirect.has_value());
+}
+
+// When errorCode is anything other than REDIRECT, no Redirect bytes are
+// written, and the parsed RequestError has no redirect.
+TEST_F(MoQFramerV18Test, RequestErrorNonRedirectOmitsRedirect) {
+  RequestError requestError;
+  requestError.requestID = RequestID(9);
+  requestError.errorCode = RequestErrorCode::INTERNAL_ERROR;
+  requestError.reasonPhrase = "boom";
+  requestError.retryInterval = std::chrono::milliseconds{0};
+  // Set redirect anyway to confirm the writer ignores it for non-REDIRECT.
+  Redirect redirect;
+  redirect.connectUri = "ignored";
+  requestError.redirect = redirect;
+
+  folly::IOBufQueue writeBuf{folly::IOBufQueue::cacheChainLength()};
+  ASSERT_TRUE(
+      writer_
+          .writeRequestError(writeBuf, requestError, FrameType::REQUEST_ERROR)
+          .hasValue());
+
+  auto serialized = writeBuf.move();
+  folly::io::Cursor cursor(serialized.get());
+  auto frameType = decodeMoQVarint(cursor);
+  ASSERT_TRUE(frameType.has_value());
+
+  auto bodyLen = frameLength(cursor);
+  auto parsed =
+      parser_.parseRequestError(cursor, bodyLen, FrameType::REQUEST_ERROR);
+  ASSERT_TRUE(parsed.hasValue());
+  EXPECT_FALSE(parsed->redirect.has_value());
+}
+
 // Draft 18 added a Track Properties block at the end of REQUEST_OK. Verify
 // that a populated TRACK_STATUS_OK round-trips its Track Properties through
 // the wire and back into the TrackStatusOk struct.