diff --git a/examples/raytrace/gltf-loader.cc b/examples/raytrace/gltf-loader.cc
index 0ca4d7f..8cf357d 100644
--- a/examples/raytrace/gltf-loader.cc
+++ b/examples/raytrace/gltf-loader.cc
@@ -1,5 +1,7 @@
 #include "gltf-loader.h"
 
+#include <iostream>
+
 #define TINYGLTF_IMPLEMENTATION
 #define STB_IMAGE_IMPLEMENTATION
 #include "tiny_gltf.h"