diff --git a/Eigen/src/Core/util/ConfigureVectorization.h b/Eigen/src/Core/util/ConfigureVectorization.h
index 47ddd4f8a..223d64f7e 100644
--- a/Eigen/src/Core/util/ConfigureVectorization.h
+++ b/Eigen/src/Core/util/ConfigureVectorization.h
@@ -41,6 +41,7 @@
 // Align to the boundary that avoids false sharing.
 // https://en.cppreference.com/w/cpp/thread/hardware_destructive_interference_size
 #ifdef __cpp_lib_hardware_interference_size
+#include <new>
 #define EIGEN_ALIGN_TO_AVOID_FALSE_SHARING EIGEN_ALIGN_TO_BOUNDARY(std::hardware_destructive_interference_size)
 #else
 // Overalign for the cache line size of 128 bytes (Apple M1)