diff --git a/mlx/event.h b/mlx/event.h
index 937028e2a..66a6a75df 100644
--- a/mlx/event.h
+++ b/mlx/event.h
@@ -1,6 +1,7 @@
 // Copyright © 2024 Apple Inc.
 #pragma once
 
+#include <cstdint>
 #include <memory>
 #include <stdexcept>