From 109c33a0e9036b06354d9722872113a889c5ba48 Mon Sep 17 00:00:00 2001
From: pelesh <peless@ornl.gov>
Date: Mon, 19 Jan 2026 14:13:35 -0500
Subject: [PATCH] Add missing include.

---
 GridKit/Model/VariableMonitor.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/GridKit/Model/VariableMonitor.hpp b/GridKit/Model/VariableMonitor.hpp
index ce7df4f4..c50654ae 100644
--- a/GridKit/Model/VariableMonitor.hpp
+++ b/GridKit/Model/VariableMonitor.hpp
@@ -9,6 +9,7 @@
 #include <limits>
 #include <memory>
 #include <set>
+#include <sstream>
 #include <string>
 #include <type_traits>
 #include <variant>