diff --git a/cub/cub/device/dispatch/kernels/merge_sort.cuh b/cub/cub/device/dispatch/kernels/merge_sort.cuh
index a5070e353a7..51cfad7dd1e 100644
--- a/cub/cub/device/dispatch/kernels/merge_sort.cuh
+++ b/cub/cub/device/dispatch/kernels/merge_sort.cuh
@@ -17,17 +17,7 @@
 #include <cub/util_policy_wrapper_t.cuh>
 #include <cub/util_vsmem.cuh>
 
-THRUST_NAMESPACE_BEGIN
-
-namespace cuda_cub::core::detail
-{
-// We must forward declare here because make_load_iterator.h pulls in non NVRTC compilable code
-template <class PtxPlan, class It>
-typename detail::LoadIterator<PtxPlan, It>::type _CCCL_DEVICE _CCCL_FORCEINLINE
-make_load_iterator(PtxPlan const&, It it);
-} // namespace cuda_cub::core::detail
-
-THRUST_NAMESPACE_END
+#include <thrust/system/cuda/detail/core/make_load_iterator.h>
 
 CUB_NAMESPACE_BEGIN
 
diff --git a/thrust/thrust/detail/type_traits/pointer_traits.h b/thrust/thrust/detail/type_traits/pointer_traits.h
index baf4c0ca1dd..cb1b91b58f7 100644
--- a/thrust/thrust/detail/type_traits/pointer_traits.h
+++ b/thrust/thrust/detail/type_traits/pointer_traits.h
@@ -31,8 +31,8 @@
 #include <thrust/detail/type_traits/is_thrust_pointer.h>
 #include <thrust/iterator/iterator_traits.h>
 
-#include <cstddef>
-#include <type_traits>
+#include <cuda/std/cstddef>
+#include <cuda/std/type_traits>
 
 THRUST_NAMESPACE_BEGIN
 namespace detail
@@ -62,7 +62,7 @@ struct pointer_difference
 template <typename T>
 struct pointer_difference<T*>
 {
-  using type = std::ptrdiff_t;
+  using type = ::cuda::std::ptrdiff_t;
 };
 
 template <typename Ptr, typename T>
@@ -117,10 +117,10 @@ template <template <typename, typename, typename, typename...> class Ptr,
           typename Tag,
           typename... PtrTail,
           typename T>
-struct rebind_pointer<Ptr<OldT, Tag, typename std::add_lvalue_reference<OldT>::type, PtrTail...>, T>
+struct rebind_pointer<Ptr<OldT, Tag, typename ::cuda::std::add_lvalue_reference<OldT>::type, PtrTail...>, T>
 {
   //  static_assert(std::is_same<OldT, Tag>::value, "2");
-  using type = Ptr<T, Tag, typename std::add_lvalue_reference<T>::type, PtrTail...>;
+  using type = Ptr<T, Tag, typename ::cuda::std::add_lvalue_reference<T>::type, PtrTail...>;
 };
 
 // Rebind `thrust::pointer`-like things with native reference types and templated
@@ -131,11 +131,12 @@ template <template <typename, typename, typename, typename...> class Ptr,
           template <typename...> class DerivedPtr,
           typename... DerivedPtrTail,
           typename T>
-struct rebind_pointer<Ptr<OldT, Tag, typename std::add_lvalue_reference<OldT>::type, DerivedPtr<OldT, DerivedPtrTail...>>,
-                      T>
+struct rebind_pointer<
+  Ptr<OldT, Tag, typename ::cuda::std::add_lvalue_reference<OldT>::type, DerivedPtr<OldT, DerivedPtrTail...>>,
+  T>
 {
   //  static_assert(std::is_same<OldT, Tag>::value, "3");
-  using type = Ptr<T, Tag, typename std::add_lvalue_reference<T>::type, DerivedPtr<T, DerivedPtrTail...>>;
+  using type = Ptr<T, Tag, typename ::cuda::std::add_lvalue_reference<T>::type, DerivedPtr<T, DerivedPtrTail...>>;
 };
 
 namespace pointer_traits_detail
diff --git a/thrust/thrust/iterator/iterator_traits.h b/thrust/thrust/iterator/iterator_traits.h
index 4001410613b..9bbe2c20a7b 100644
--- a/thrust/thrust/iterator/iterator_traits.h
+++ b/thrust/thrust/iterator/iterator_traits.h
@@ -39,7 +39,7 @@
 #  pragma system_header
 #endif // no system header
 
-#include <iterator>
+#include <cuda/std/iterator>
 
 THRUST_NAMESPACE_BEGIN
 
@@ -47,7 +47,7 @@ THRUST_NAMESPACE_BEGIN
  *  interface for querying the properties of iterators at compile-time.
  */
 template <typename T>
-struct iterator_traits : std::iterator_traits<T>
+struct iterator_traits : ::cuda::std::iterator_traits<T>
 {};
 
 template <typename Iterator>
@@ -70,8 +70,10 @@ struct iterator_system;
 
 THRUST_NAMESPACE_END
 
-#include <thrust/iterator/detail/any_system_tag.h>
-#include <thrust/iterator/detail/device_system_tag.h>
-#include <thrust/iterator/detail/host_system_tag.h>
-#include <thrust/iterator/detail/iterator_traits.inl>
-#include <thrust/iterator/detail/iterator_traversal_tags.h>
+#if !_CCCL_COMPILER(NVRTC)
+#  include <thrust/iterator/detail/any_system_tag.h>
+#  include <thrust/iterator/detail/device_system_tag.h>
+#  include <thrust/iterator/detail/host_system_tag.h>
+#  include <thrust/iterator/detail/iterator_traits.inl>
+#  include <thrust/iterator/detail/iterator_traversal_tags.h>
+#endif