diff --git a/submodules/diff-gaussian-rasterization_fastgs/cuda_rasterizer/rasterizer_impl.h b/submodules/diff-gaussian-rasterization_fastgs/cuda_rasterizer/rasterizer_impl.h
index 2370948..6c703a4 100755
--- a/submodules/diff-gaussian-rasterization_fastgs/cuda_rasterizer/rasterizer_impl.h
+++ b/submodules/diff-gaussian-rasterization_fastgs/cuda_rasterizer/rasterizer_impl.h
@@ -13,6 +13,7 @@
 
 #include <iostream>
 #include <vector>
+#include <cstdint>
 #include "rasterizer.h"
 #include <cuda_runtime_api.h>
 
@@ -92,4 +93,4 @@ namespace CudaRasterizer
 		T::fromChunk(size, P);
 		return ((size_t)size) + 128;
 	}
-};
\ No newline at end of file
+};