diff --git a/include/cetl/type_traits_ext.hpp b/include/cetl/type_traits_ext.hpp
index c3d1d61..fe72381 100644
--- a/include/cetl/type_traits_ext.hpp
+++ b/include/cetl/type_traits_ext.hpp
@@ -14,6 +14,7 @@
 #include <utility>
 #include <initializer_list>
 #include <limits>
+#include <cstdint>
 #include <tuple>
 #include <type_traits>
 #include <cetl/pf17/type_traits.hpp>