diff --git a/common/quiche_data_reader.cc b/common/quiche_data_reader.cc
index f6b6fb5..3445013 100644
--- a/common/quiche_data_reader.cc
+++ b/common/quiche_data_reader.cc
@@ -4,6 +4,8 @@
 
 #include "net/third_party/quiche/src/common/quiche_data_reader.h"
 
+#include <cstring>
+
 #include "net/third_party/quiche/src/common/platform/api/quiche_endian.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_logging.h"
 #include "net/third_party/quiche/src/common/platform/api/quiche_str_cat.h"
diff --git a/common/quiche_data_writer.h b/common/quiche_data_writer.h
index 869a947..cded0fa 100644
--- a/common/quiche_data_writer.h
+++ b/common/quiche_data_writer.h
@@ -7,6 +7,7 @@
 
 #include <cstddef>
 #include <cstdint>
+#include <cstring>
 #include <limits>
 
 #include "net/third_party/quiche/src/common/platform/api/quiche_endian.h"