diff --git a/include/mdds/trie_map.hpp b/include/mdds/trie_map.hpp
index c0fe6a0..d5b6dd5 100644
--- a/include/mdds/trie_map.hpp
+++ b/include/mdds/trie_map.hpp
@@ -31,6 +31,7 @@
 
 #include "trie_map_itr.hpp"
 
+#include <cstdint>
 #include <vector>
 #include <string>
 #include <deque>
diff --git a/include/mdds/trie_map_itr.hpp b/include/mdds/trie_map_itr.hpp
index cc993fb..bac5615 100644
--- a/include/mdds/trie_map_itr.hpp
+++ b/include/mdds/trie_map_itr.hpp
@@ -28,6 +28,7 @@
 #ifndef INCLUDED_MDDS_TRIE_MAP_ITR_HPP
 #define INCLUDED_MDDS_TRIE_MAP_ITR_HPP
 
+#include <cstdint>
 #include <utility>
 #include <cassert>
 #include <iostream>