diff --git a/src/dwarfs/metadata_v2.cpp b/src/dwarfs/metadata_v2.cpp
index 83728425..5a9d22e5 100644
--- a/src/dwarfs/metadata_v2.cpp
+++ b/src/dwarfs/metadata_v2.cpp
@@ -38,6 +38,7 @@
 #include <fmt/format.h>
 
 #include <folly/container/F14Set.h>
+#include <folly/portability/Stdlib.h>
 #include <folly/portability/Unistd.h>
 
 #include <fsst.h>