diff --git a/scripts/bbpe/generate_bbpe_table.py b/scripts/bbpe/generate_bbpe_table.py
index c0416b27a..0b5204241 100755
--- a/scripts/bbpe/generate_bbpe_table.py
+++ b/scripts/bbpe/generate_bbpe_table.py
@@ -36,6 +36,7 @@ def main():
     s += "\n"
     s += '#include "sherpa-onnx/csrc/bbpe.h"\n'
     s += "\n"
+    s += "#include <cstdint>\n"
     s += "#include <string>\n"
     s += "#include <unordered_map>\n"
     s += "\n"
diff --git a/sherpa-onnx/csrc/bbpe.cc b/sherpa-onnx/csrc/bbpe.cc
index d4696132e..1aa67ffa8 100644
--- a/sherpa-onnx/csrc/bbpe.cc
+++ b/sherpa-onnx/csrc/bbpe.cc
@@ -6,6 +6,7 @@
 
 #include "sherpa-onnx/csrc/bbpe.h"
 
+#include <cstdint>
 #include <string>
 #include <unordered_map>
 
diff --git a/sherpa-onnx/csrc/bbpe.h b/sherpa-onnx/csrc/bbpe.h
index 8c317f83d..0b6a4ecf3 100644
--- a/sherpa-onnx/csrc/bbpe.h
+++ b/sherpa-onnx/csrc/bbpe.h
@@ -4,6 +4,7 @@
 
 #ifndef SHERPA_ONNX_CSRC_BBPE_H_
 #define SHERPA_ONNX_CSRC_BBPE_H_
+#include <cstdint>
 #include <string>
 #include <unordered_map>