diff --git a/sherpa-onnx/csrc/wave-reader.cc b/sherpa-onnx/csrc/wave-reader.cc
index e859287e1..0deb29a4f 100644
--- a/sherpa-onnx/csrc/wave-reader.cc
+++ b/sherpa-onnx/csrc/wave-reader.cc
@@ -5,6 +5,7 @@
 #include "sherpa-onnx/csrc/wave-reader.h"
 
 #include <cassert>
+#include <cstdint>
 #include <fstream>
 #include <utility>
 #include <vector>