diff -Nrup a/src/mpdpp.h b/src/mpdpp.h
--- a/src/mpdpp.h	2018-04-11 12:40:52.000000000 -0600
+++ b/src/mpdpp.h	2019-09-23 16:16:18.576652169 -0600
@@ -23,6 +23,7 @@
 
 #include <cassert>
 #include <exception>
+#include <stdexcept>
 #include <random>
 #include <set>
 #include <vector>