diff --git a/include/URT.hpp b/include/URT.hpp
index 87e4c02..7fd0100 100644
--- a/include/URT.hpp
+++ b/include/URT.hpp
@@ -109,6 +109,7 @@
 
 #include <fstream>
 #include <map>
+#include <memory>
 
 #include <boost/math/distributions/students_t.hpp>
 #include <boost/math/special_functions/gamma.hpp>