diff --git a/src/dawn/native/stream/ByteVectorSink.h b/src/dawn/native/stream/ByteVectorSink.h
index 3b6016c082..5ecc16a740 100644
--- a/src/dawn/native/stream/ByteVectorSink.h
+++ b/src/dawn/native/stream/ByteVectorSink.h
@@ -17,6 +17,7 @@
 
 #include <ostream>
 #include <vector>
+#include <cstdint>
 
 #include "dawn/native/stream/Sink.h"
 
diff --git a/src/tint/reader/spirv/namer.h b/src/tint/reader/spirv/namer.h
index 7a20e8738b..8ac727c35b 100644
--- a/src/tint/reader/spirv/namer.h
+++ b/src/tint/reader/spirv/namer.h
@@ -18,6 +18,7 @@
 #include <string>
 #include <unordered_map>
 #include <vector>
+#include <cstdint>
 
 #include "src/tint/reader/spirv/fail_stream.h"