diff --git a/apex/contrib/csrc/group_norm_v2/gn_cuda_kernel.cuh b/apex/contrib/csrc/group_norm_v2/gn_cuda_kernel.cuh
index 05f2c9854..366bfbb08 100644
--- a/apex/contrib/csrc/group_norm_v2/gn_cuda_kernel.cuh
+++ b/apex/contrib/csrc/group_norm_v2/gn_cuda_kernel.cuh
@@ -2,6 +2,8 @@
 
 #include <cooperative_groups.h>
 
+#include <tuple>
+
 #include "gn_utils.hpp"
 
 namespace group_norm_v2 {