From 9e8f7a6c6b0a865572c526497804a91b3a72285a Mon Sep 17 00:00:00 2001
From: Martin Michelsen <fuzziqersoftware+g@gmail.com>
Date: Sat, 13 Jan 2024 00:01:25 -0800
Subject: [PATCH] add mutex header

---
 src/FileContentsCache.hh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/FileContentsCache.hh b/src/FileContentsCache.hh
index 1d50be60..6f02af69 100644
--- a/src/FileContentsCache.hh
+++ b/src/FileContentsCache.hh
@@ -2,6 +2,7 @@
 
 #include <functional>
 #include <memory>
+#include <mutex>
 #include <shared_mutex>
 #include <string>
 #include <unordered_map>