diff --git a/hiredis_wrapper.h b/hiredis_wrapper.h
index 24a0fe1..8f3473b 100644
--- a/hiredis_wrapper.h
+++ b/hiredis_wrapper.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <mutex>
 #include <string>
 #include <memory>
 #include <optional>