--- a/google/cloud/iam_policy.h	2023-08-26 23:33:08.726455158 +0200
+++ a/google/cloud/iam_policy.h	2023-08-26 23:32:40.366454602 +0200
@@ -17,6 +17,7 @@ 
 
 #include "google/cloud/iam_bindings.h"
 #include "google/cloud/version.h"
+#include <cstdint>
 #include <string>
 
 namespace google {