diff --git a/tools/db_sanity_test.cc b/tools/db_sanity_test.cc
index e970f5e916..4ae120c21e 100644
--- a/tools/db_sanity_test.cc
+++ b/tools/db_sanity_test.cc
@@ -4,6 +4,7 @@
 //  of patent rights can be found in the PATENTS file in the same directory.
 
 #include <cstdio>
+#include <cstdlib>
 #include <vector>
 #include <memory>
 
diff --git a/util/arena.h b/util/arena.h
index 0c9aa9738c..53acd2270b 100644
--- a/util/arena.h
+++ b/util/arena.h
@@ -13,6 +13,7 @@
 
 #pragma once
 #include <cstddef>
+#include <cerrno>
 #include <vector>
 #include <assert.h>
 #include <stdint.h>
diff --git a/util/log_buffer.h b/util/log_buffer.h
index 8ebe92e034..2a24bf854c 100644
--- a/util/log_buffer.h
+++ b/util/log_buffer.h
@@ -8,6 +8,7 @@
 #include "rocksdb/env.h"
 #include "util/arena.h"
 #include "util/autovector.h"
+#include <ctime>
 
 namespace rocksdb {