diff --git a/descartes_planner/include/descartes_planner/planning_graph_edge_policy.h b/descartes_planner/include/descartes_planner/planning_graph_edge_policy.h
index c07256f7..1505385f 100644
--- a/descartes_planner/include/descartes_planner/planning_graph_edge_policy.h
+++ b/descartes_planner/include/descartes_planner/planning_graph_edge_policy.h
@@ -2,6 +2,7 @@
 #define PLANNING_GRAPH_EDGE_POLICY_H
 
 #include "descartes_planner/ladder_graph.h"
+#include <numeric>
 
 namespace descartes_planner
 {