diff --git a/Src/IACore/inc/IACore/PCH.hpp b/Src/IACore/inc/IACore/PCH.hpp
index 513dde5..8ab2850 100644
--- a/Src/IACore/inc/IACore/PCH.hpp
+++ b/Src/IACore/inc/IACore/PCH.hpp
@@ -514,6 +514,7 @@ template<typename _value_type, SIZE_T count> using Array = std::array<_value_typ
 template<typename _value_type> using Vector = std::vector<_value_type>;
 template<typename _value_type> using Optional = std::optional<_value_type>;
 template<typename _key_type> using UnorderedSet = ankerl::unordered_dense::set<_key_type>;
+template<typename _value_type> using Span = std::span<_value_type>;
 template<typename _key_type, typename _value_type>
 using UnorderedMap = ankerl::unordered_dense::map<_key_type, _value_type>;