diff --git a/iocore/net/P_QUICNetVConnection.h b/iocore/net/P_QUICNetVConnection.h
index a7aee81831d..a3f24a42e8c 100644
--- a/iocore/net/P_QUICNetVConnection.h
+++ b/iocore/net/P_QUICNetVConnection.h
@@ -349,6 +349,7 @@ class QUICNetVConnection : public UnixNetVConnection,
 
   void _handle_periodic_ack_event();
   void _handle_idle_timeout();
+  void _handle_active_timeout();
 
   QUICConnectionErrorUPtr _handle_frame(const QUICNewConnectionIdFrame &frame);
 
diff --git a/iocore/net/QUICNetVConnection.cc b/iocore/net/QUICNetVConnection.cc
index a557303e5b1..8d458ce0de8 100644
--- a/iocore/net/QUICNetVConnection.cc
+++ b/iocore/net/QUICNetVConnection.cc
@@ -838,6 +838,10 @@ QUICNetVConnection::state_handshake(int event, Event *data)
     // Start Immediate Close because of Idle Timeout
     this->_handle_idle_timeout();
     break;
+  case VC_EVENT_ACTIVE_TIMEOUT:
+    // Start Immediate Close
+    this->_handle_active_timeout();
+    break;
   default:
     QUICConDebug("Unexpected event: %s (%d)", QUICDebugNames::quic_event(event), event);
   }
@@ -874,6 +878,10 @@ QUICNetVConnection::state_connection_established(int event, Event *data)
     // Start Immediate Close because of Idle Timeout
     this->_handle_idle_timeout();
     break;
+  case VC_EVENT_ACTIVE_TIMEOUT:
+    // Start Immediate Close
+    this->_handle_active_timeout();
+    break;
   default:
     QUICConDebug("Unexpected event: %s (%d)", QUICDebugNames::quic_event(event), event);
   }
@@ -906,6 +914,9 @@ QUICNetVConnection::state_connection_closing(int event, Event *data)
     break;
   case QUIC_EVENT_STATELESS_RESET:
     break;
+  case VC_EVENT_ACTIVE_TIMEOUT:
+    // Do nothing because closing is in progress
+    break;
   case QUIC_EVENT_ACK_PERIODIC:
   default:
     QUICConDebug("Unexpected event: %s (%d)", QUICDebugNames::quic_event(event), event);
@@ -936,6 +947,9 @@ QUICNetVConnection::state_connection_draining(int event, Event *data)
     break;
   case QUIC_EVENT_STATELESS_RESET:
     break;
+  case VC_EVENT_ACTIVE_TIMEOUT:
+    // Do nothing because closing is in progress
+    break;
   case QUIC_EVENT_ACK_PERIODIC:
   default:
     QUICConDebug("Unexpected event: %s (%d)", QUICDebugNames::quic_event(event), event);
@@ -2177,6 +2191,12 @@ QUICNetVConnection::_handle_idle_timeout()
   // TODO: signal VC_EVENT_ACTIVE_TIMEOUT/VC_EVENT_INACTIVITY_TIMEOUT to application
 }
 
+void
+QUICNetVConnection::_handle_active_timeout()
+{
+  this->close_quic_connection(std::make_unique<QUICConnectionError>(QUICTransErrorCode::NO_ERROR, "Active Timeout"));
+}
+
 void
 QUICNetVConnection::_validate_new_path(const QUICPath &path)
 {