diff --git a/sherpa-onnx/csrc/text-utils.cc b/sherpa-onnx/csrc/text-utils.cc
index 052d29006..c08e857d9 100644
--- a/sherpa-onnx/csrc/text-utils.cc
+++ b/sherpa-onnx/csrc/text-utils.cc
@@ -13,6 +13,7 @@
 #include <sstream>
 #include <string>
 #include <unordered_map>
+#include <utility>
 #include <vector>
 
 #include "source/utf8.h"