diff --git a/concepts.cpp b/concepts.cpp
index 36c46d77..8f3f01d5 100644
--- a/concepts.cpp
+++ b/concepts.cpp
@@ -35,6 +35,7 @@
 #include <boost/numeric/ublas/symmetric.hpp>
 #include <boost/numeric/ublas/hermitian.hpp>
 #include <boost/numeric/ublas/matrix_sparse.hpp>
+#include <boost/numeric/ublas/vector_of_vector.hpp>
 #include <boost/numeric/ublas/io.hpp>
 
 #include <boost/numeric/ublas/detail/concepts.hpp>