diff --git a/proxy/http3/Http3App.cc b/proxy/http3/Http3App.cc
index 7519fe292f7..da9fa624a5b 100644
--- a/proxy/http3/Http3App.cc
+++ b/proxy/http3/Http3App.cc
@@ -351,9 +351,9 @@ Http3App::_handle_bidi_stream_on_write_complete(int event, VIO *vio)
     txn->handleEvent(event);
   }
   // FIXME There may be data to read
-  this->_ssn->remove_transaction(txn);
   this->_qc->stream_manager()->delete_stream(stream_id);
   this->_streams.erase(stream_id);
+  delete txn;
 }
 
 //
diff --git a/proxy/http3/Http3Session.cc b/proxy/http3/Http3Session.cc
index cf543c2bc45..8a422fff599 100644
--- a/proxy/http3/Http3Session.cc
+++ b/proxy/http3/Http3Session.cc
@@ -38,9 +38,8 @@ HQSession::HQSession(NetVConnection *vc) : ProxySession(vc)
 
 HQSession::~HQSession()
 {
-  for (HQTransaction *t = this->_transaction_list.head; t; t = static_cast<HQTransaction *>(t->link.next)) {
-    delete t;
-  }
+  // Transactions should be deleted first before HQSesson gets deleted.
+  ink_assert(this->_transaction_list.head);
 }
 
 void
@@ -55,7 +54,6 @@ void
 HQSession::remove_transaction(HQTransaction *trans)
 {
   this->_transaction_list.remove(trans);
-  delete trans;
 
   return;
 }
diff --git a/proxy/http3/Http3Transaction.cc b/proxy/http3/Http3Transaction.cc
index 0916c91fc56..6c8e0cf9fd4 100644
--- a/proxy/http3/Http3Transaction.cc
+++ b/proxy/http3/Http3Transaction.cc
@@ -62,9 +62,14 @@ HQTransaction::HQTransaction(HQSession *session, QUICStreamVCAdapter::IOInfo &in
   this->_thread = this_ethread();
 
   this->_reader = this->_read_vio_buf.alloc_reader();
+
+  static_cast<HQSession *>(this->_proxy_ssn)->add_transaction(static_cast<HQTransaction *>(this));
 }
 
-HQTransaction::~HQTransaction() {}
+HQTransaction::~HQTransaction()
+{
+  static_cast<HQSession *>(this->_proxy_ssn)->remove_transaction(this);
+}
 
 void
 HQTransaction::set_active_timeout(ink_hrtime timeout_in)
@@ -295,7 +300,6 @@ HQTransaction::_signal_write_event()
 //
 Http3Transaction::Http3Transaction(Http3Session *session, QUICStreamVCAdapter::IOInfo &info) : super(session, info)
 {
-  static_cast<HQSession *>(this->_proxy_ssn)->add_transaction(static_cast<HQTransaction *>(this));
   QUICStreamId stream_id = this->_info.adapter.stream().id();
 
   this->_header_framer = new Http3HeaderFramer(this, &this->_write_vio, session->local_qpack(), stream_id);
@@ -513,8 +517,6 @@ Http3Transaction::has_request_body(int64_t content_length, bool is_chunked_set)
 //
 Http09Transaction::Http09Transaction(Http09Session *session, QUICStreamVCAdapter::IOInfo &info) : super(session, info)
 {
-  static_cast<HQSession *>(this->_proxy_ssn)->add_transaction(static_cast<HQTransaction *>(this));
-
   SET_HANDLER(&Http09Transaction::state_stream_open);
 }