diff --git a/src/core/helper/random-variable-stream-helper.h b/src/core/helper/random-variable-stream-helper.h
index 51bb1a010..6b63dcf89 100644
--- a/src/core/helper/random-variable-stream-helper.h
+++ b/src/core/helper/random-variable-stream-helper.h
@@ -18,6 +18,7 @@
 #ifndef RANDOM_VARIABLE_STREAM_HELPER_H
 #define RANDOM_VARIABLE_STREAM_HELPER_H
 
+#include <cstdint>
 #include <string>
 
 /**