diff --git a/chrome/browser/webauthn/authenticator_request_dialog_model.h b/chrome/browser/webauthn/authenticator_request_dialog_model.h
index f4992a74bd6..45cabe39974 100644
--- a/chrome/browser/webauthn/authenticator_request_dialog_model.h
+++ b/chrome/browser/webauthn/authenticator_request_dialog_model.h
@@ -7,6 +7,7 @@
 
 #include <memory>
 #include <string>
+#include <variant>
 #include <vector>
 
 #include "base/containers/span.h"