diff --git a/CesiumGltf/src/Model.cpp b/CesiumGltf/src/Model.cpp
index d65bdd6a3..e9c18e63b 100644
--- a/CesiumGltf/src/Model.cpp
+++ b/CesiumGltf/src/Model.cpp
@@ -45,6 +45,7 @@
 #include <glm/ext/vector_float3.hpp>
 #include <glm/geometric.hpp>
 #include <glm/gtx/norm.hpp>
+#include <glm/gtx/quaternion.hpp>
 
 #include <algorithm>
 #include <array>