diff --git a/table/block_based/data_block_hash_index.h b/table/block_based/data_block_hash_index.h
index f356395f3..6eaf71735 100644
--- a/table/block_based/data_block_hash_index.h
+++ b/table/block_based/data_block_hash_index.h
@@ -7,6 +7,7 @@
 
 #include <string>
 #include <vector>
+#include <cstdint>
 
 #include "rocksdb/slice.h"
 
diff --git a/util/string_util.h b/util/string_util.h
index 55d106fff..2adf1ec68 100644
--- a/util/string_util.h
+++ b/util/string_util.h
@@ -10,6 +10,7 @@
 #include <string>
 #include <unordered_map>
 #include <vector>
+#include <cstdint>
 
 #include "rocksdb/rocksdb_namespace.h"