diff --git a/src/3rdparty/gn/src/gn/escape.h b/src/3rdparty/gn/src/gn/escape.h
index b5cfd6b..1b61eaa 100644
--- a/src/3rdparty/gn/src/gn/escape.h
+++ b/src/3rdparty/gn/src/gn/escape.h
@@ -6,6 +6,7 @@
 #define TOOLS_GN_ESCAPE_H_
 
 #include <iosfwd>
+#include <string>
 #include <string_view>
 
 enum EscapingMode {