diff --git a/src/lib/dbus/AppendIter.hxx b/src/lib/dbus/AppendIter.hxx
index b3dc28747..d785274e0 100644
--- a/src/lib/dbus/AppendIter.hxx
+++ b/src/lib/dbus/AppendIter.hxx
@@ -36,6 +36,7 @@
 #include "Iter.hxx"
 #include "Values.hxx"
 
+#include <cstdint>
 #include <stdexcept>
 
 namespace ODBus {