diff --git a/engine/src/flutter/third_party/txt/src/minikin/FontLanguageListCache.cpp b/engine/src/flutter/third_party/txt/src/minikin/FontLanguageListCache.cpp
index 093ee269db5..e08e88d00af 100644
--- a/engine/src/flutter/third_party/txt/src/minikin/FontLanguageListCache.cpp
+++ b/engine/src/flutter/third_party/txt/src/minikin/FontLanguageListCache.cpp
@@ -19,6 +19,7 @@
 #include "FontLanguageListCache.h"
 
 #include <unicode/uloc.h>
+#include <unicode/umachine.h>
 #include <unordered_set>
 
 #include <log/log.h>