diff --git a/quic/core/quic_packet_number.cc b/quic/core/quic_packet_number.cc
index 345a056..b3009ce 100644
--- a/quic/core/quic_packet_number.cc
+++ b/quic/core/quic_packet_number.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <algorithm>
+
 #include "net/third_party/quiche/src/quic/core/quic_packet_number.h"
 
 namespace quic {