diff --git a/chinese/fcitx5-mcbopomofo/files/patch-src_KeyHandler.cpp b/chinese/fcitx5-mcbopomofo/files/patch-src_KeyHandler.cpp
new file mode 100644
index 000000000000..5a06d228faae
--- /dev/null
+++ b/chinese/fcitx5-mcbopomofo/files/patch-src_KeyHandler.cpp
@@ -0,0 +1,10 @@
+--- src/KeyHandler.cpp.orig	2024-05-06 03:07:04 UTC
++++ src/KeyHandler.cpp
+@@ -25,6 +25,7 @@
+ 
+ #include <algorithm>
+ #include <chrono>
++#include <sstream>
+ #include <utility>
+ 
+ #include "ChineseNumbers/ChineseNumbers.h"