diff --git a/gloo/types.h b/gloo/types.h
index cd38c8a93..61fab3520 100644
--- a/gloo/types.h
+++ b/gloo/types.h
@@ -5,6 +5,7 @@
 #pragma once
 
 #include <iostream>
+#include <cstdint>
 
 #ifdef __CUDA_ARCH__
 #include <cuda.h>