diff --git a/include/algorithm b/include/algorithm
index d924a7d..67e1101 100644
--- a/include/algorithm
+++ b/include/algorithm
@@ -593,7 +593,7 @@
 #include <utility>
 #include <memory>
 #include <iterator>
-#include <cstdlib>
+#include <cstddef>
 
 #include <__undef_min_max>