diff --git a/quic/core/quic_connection_test.cc b/quic/core/quic_connection_test.cc
index afa9512..acb76de 100644
--- a/quic/core/quic_connection_test.cc
+++ b/quic/core/quic_connection_test.cc
@@ -9,6 +9,8 @@
 #include <ostream>
 #include <utility>
 
+#include <string>
+
 #include "base/macros.h"
 #include "net/third_party/quiche/src/quic/core/congestion_control/loss_detection_interface.h"
 #include "net/third_party/quiche/src/quic/core/congestion_control/send_algorithm_interface.h"
@@ -27,7 +29,6 @@
 #include "net/third_party/quiche/src/quic/platform/api/quic_ptr_util.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_reference_counted.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_str_cat.h"
-#include "net/third_party/quiche/src/quic/platform/api/quic_string.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_test.h"
 #include "net/third_party/quiche/src/quic/test_tools/mock_clock.h"