diff --git a/third_party/blink/common/input/web_touch_event.cc b/third_party/blink/common/input/web_touch_event.cc
index 7ef37fec6..b77be3bac 100644
--- a/third_party/blink/common/input/web_touch_event.cc
+++ b/third_party/blink/common/input/web_touch_event.cc
@@ -4,6 +4,8 @@
 
 #include "third_party/blink/public/common/input/web_touch_event.h"
 
+#include <bitset>
+
 namespace blink {
 
 namespace {