diff --git a/table/block_based/data_block_hash_index.h b/table/block_based/data_block_hash_index.h
index f356395f3..321522175 100644
--- a/table/block_based/data_block_hash_index.h
+++ b/table/block_based/data_block_hash_index.h
@@ -5,6 +5,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <string>
 #include <vector>
 
diff --git a/util/string_util.h b/util/string_util.h
index 55d106fff..11178fd1d 100644
--- a/util/string_util.h
+++ b/util/string_util.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <sstream>
 #include <string>
 #include <unordered_map>