diff --git a/src/stdafx.h b/src/stdafx.h
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -48,6 +48,7 @@
 
 #include <algorithm>
 #include <array>
+#include <bit>
 #include <cassert>
 #include <cctype>
 #include <cerrno>