diff --git a/Texconv/PortablePixMap.cpp b/Texconv/PortablePixMap.cpp
index 5bcae2d..31e558e 100644
--- a/Texconv/PortablePixMap.cpp
+++ b/Texconv/PortablePixMap.cpp
@@ -25,6 +25,7 @@
 #include <cstdint>
 #include <memory>
 #include <new>
+#include <tuple>
 
 #include "DirectXTex.h"