diff --git a/extensions/openpower-pels/json_utils.hpp b/extensions/openpower-pels/json_utils.hpp
index 4ee32f4..2065952 100644
--- a/extensions/openpower-pels/json_utils.hpp
+++ b/extensions/openpower-pels/json_utils.hpp
@@ -3,6 +3,7 @@
 #include <ctype.h>
 #include <stdio.h>
 
+#include <cstdint>
 #include <fstream>
 #include <iomanip>
 #include <iostream>