diff --git a/src/app/core/project.h b/src/app/core/project.h
index 48f8ec22..13f4645d 100644
--- a/src/app/core/project.h
+++ b/src/app/core/project.h
@@ -5,6 +5,7 @@
 
 #include <fstream>
 #include <string>
+#include <string_view>
 #include <vector>
 
 #include "absl/status/status.h"