--- a/gfx/2d/Rect.h
+++ b/gfx/2d/Rect.h
@@ -10,16 +10,17 @@
 #include "BaseRect.h"
 #include "BaseMargin.h"
 #include "NumericTools.h"
 #include "Point.h"
 #include "Tools.h"
 #include "mozilla/Maybe.h"
 
 #include <cmath>
+#include <cstdint>
 
 namespace mozilla {
 
 template <typename>
 struct IsPixel;
 
 namespace gfx {
 

--- a/toolkit/components/telemetry/pingsender/pingsender.cpp
+++ b/toolkit/components/telemetry/pingsender/pingsender.cpp
@@ -1,14 +1,15 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include <cstdlib>
+#include <cstdint>
 #include <cstring>
 #include <ctime>
 #include <fstream>
 #include <iomanip>
 #include <string>
 #include <vector>
 
 #include <zlib.h>


--- a/dom/media/webrtc/sdp/RsdparsaSdpGlue.h
--- b/dom/media/webrtc/sdp/RsdparsaSdpGlue.h
@@ -6,6 +6,7 @@
 #ifndef _RUSTSDPGLUE_H_
 #define _RUSTSDPGLUE_H_
 
+#include <cstdint>
 #include <string>
 #include <vector>
 #include <utility>