From 5be366bfaec6be55df7e6be56e2869ea666e3723 Mon Sep 17 00:00:00 2001
From: Jacob Gissinger <jrgiss05@gmail.com>
Date: Fri, 26 Jun 2020 23:15:54 -0600
Subject: [PATCH] Update group.h

---
 src/group.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/group.h b/src/group.h
index 9f44850d79..4c7dca0835 100644
--- a/src/group.h
+++ b/src/group.h
@@ -16,6 +16,7 @@
 
 #include "pointers.h"
 #include <map>
+#include <string>
 
 namespace LAMMPS_NS {