From 3ec7596170c60a7fa368c8dd2fd8624942fae7fc Mon Sep 17 00:00:00 2001
From: JCW <a1q123456@users.noreply.github.com>
Date: Tue, 2 Sep 2025 21:38:14 +0100
Subject: [PATCH] Fix build error

Signed-off-by: JCW <a1q123456@users.noreply.github.com>
---
 include/xrpl/beast/utility/Journal.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/xrpl/beast/utility/Journal.h b/include/xrpl/beast/utility/Journal.h
index 4e9b2bb9e2..48ab21c1c4 100644
--- a/include/xrpl/beast/utility/Journal.h
+++ b/include/xrpl/beast/utility/Journal.h
@@ -23,6 +23,7 @@
 #include <xrpl/beast/utility/instrumentation.h>
 
 #include <charconv>
+#include <mutex>
 #include <shared_mutex>
 #include <source_location>
 #include <sstream>