From 224f3a05cf5b3777b721ecedca854f04ae984fc9 Mon Sep 17 00:00:00 2001
From: Ryan Hirasaki <ryanhirasaki@gmail.com>
Date: Wed, 19 May 2021 16:39:18 -0500
Subject: [PATCH] [sim] Fix build error when building with GCC 11.1 (#3361)

---
 .../halsim_ws_core/src/main/native/include/WSProviderContainer.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/simulation/halsim_ws_core/src/main/native/include/WSProviderContainer.h b/simulation/halsim_ws_core/src/main/native/include/WSProviderContainer.h
index 5ea8cb693f..6c51b46940 100644
--- a/simulation/halsim_ws_core/src/main/native/include/WSProviderContainer.h
+++ b/simulation/halsim_ws_core/src/main/native/include/WSProviderContainer.h
@@ -6,6 +6,7 @@
 
 #include <functional>
 #include <memory>
+#include <mutex>
 #include <shared_mutex>
 
 #include <wpi/StringMap.h>