diff --git a/Cargo.toml b/Cargo.toml
index 8235836..af3b420 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,7 +32,7 @@ name = "ort"
 description = "A safe Rust wrapper for ONNX Runtime 1.20 - Optimize and accelerate machine learning inference & training"
 version = "2.0.0-rc.9"
 edition = "2021"
-rust-version = "1.70"
+rust-version = "1.72"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/pykeio/ort"
 homepage = "https://ort.pyke.io/"
diff --git a/ort-sys/src/internal/mod.rs b/ort-sys/src/internal/mod.rs
index 6cb610a..0fc4fe6 100644
--- a/ort-sys/src/internal/mod.rs
+++ b/ort-sys/src/internal/mod.rs
@@ -1,4 +1,7 @@
-use std::hash::{BuildHasher, Hasher, RandomState};
+use std::{
+	collections::hash_map::RandomState,
+	hash::{BuildHasher, Hasher}
+};
 
 pub mod dirs;
 
diff --git a/src/lib.rs b/src/lib.rs
index 75e6008..70ba61a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -24,6 +24,8 @@ pub(crate) mod logging;
 pub mod memory;
 pub mod metadata;
 pub mod operator;
+#[macro_use]
+pub(crate) mod private;
 pub mod session;
 pub mod tensor;
 #[cfg(feature = "training")]
@@ -247,26 +249,6 @@ pub(crate) fn char_p_to_string(raw: *const c_char) -> Result<String> {
 	Ok(c_string.to_string_lossy().to_string())
 }
 
-pub(crate) struct PrivateTraitMarker;
-
-macro_rules! private_trait {
-	() => {
-		#[doc(hidden)]
-		#[allow(private_interfaces)]
-		fn _private() -> crate::PrivateTraitMarker;
-	};
-}
-macro_rules! private_impl {
-	() => {
-		#[allow(private_interfaces)]
-		fn _private() -> crate::PrivateTraitMarker {
-			crate::PrivateTraitMarker
-		}
-	};
-}
-pub(crate) use private_impl;
-pub(crate) use private_trait;
-
 #[cfg(test)]
 mod test {
 	use std::ffi::CString;
diff --git a/src/operator/kernel.rs b/src/operator/kernel.rs
index aee1fc7..fc3ed13 100644
--- a/src/operator/kernel.rs
+++ b/src/operator/kernel.rs
@@ -33,7 +33,6 @@ impl KernelAttributes {
 		Self(NonNull::from(unsafe { &*info }))
 	}
 
-	#[allow(private_bounds)]
 	pub fn get<'s, T: GetKernelAttribute<'s>>(&'s self, name: impl AsRef<str>) -> Option<T> {
 		let name = CString::new(name.as_ref()).ok()?;
 		T::get_from(self.0.as_ptr(), name.as_ptr())
@@ -106,7 +105,7 @@ impl AsPointer for KernelAttributes {
 	}
 }
 
-pub(crate) trait GetKernelAttribute<'s> {
+pub trait GetKernelAttribute<'s> {
 	fn get_from(info: *mut ort_sys::OrtKernelInfo, name: *const ort_sys::c_char) -> Option<Self>
 	where
 		Self: Sized;
diff --git a/src/private.rs b/src/private.rs
new file mode 100644
index 0000000..9dd6365
--- /dev/null
+++ b/src/private.rs
@@ -0,0 +1,15 @@
+pub struct PrivateTraitMarker;
+
+macro_rules! private_trait {
+	() => {
+		#[doc(hidden)]
+		fn _private() -> crate::private::PrivateTraitMarker;
+	};
+}
+macro_rules! private_impl {
+	() => {
+		fn _private() -> crate::private::PrivateTraitMarker {
+			crate::private::PrivateTraitMarker
+		}
+	};
+}
diff --git a/src/tensor/types.rs b/src/tensor/types.rs
index 8b73ece..aa02a91 100644
--- a/src/tensor/types.rs
+++ b/src/tensor/types.rs
@@ -116,13 +116,13 @@ pub trait IntoTensorElementType {
 	/// Returns the ONNX tensor element data type corresponding to the given Rust type.
 	fn into_tensor_element_type() -> TensorElementType;
 
-	crate::private_trait!();
+	private_trait!();
 }
 
 /// A superset of [`IntoTensorElementType`] that represents traits whose underlying memory is identical between Rust and
 /// C++ (i.e., every type except `String`).
 pub trait PrimitiveTensorElementType: IntoTensorElementType {
-	crate::private_trait!();
+	private_trait!();
 }
 
 macro_rules! impl_type_trait {
@@ -132,11 +132,11 @@ macro_rules! impl_type_trait {
 				TensorElementType::$variant
 			}
 
-			crate::private_impl!();
+			private_impl!();
 		}
 
 		impl PrimitiveTensorElementType for $type_ {
-			crate::private_impl!();
+			private_impl!();
 		}
 	};
 }
@@ -164,7 +164,7 @@ impl IntoTensorElementType for String {
 		TensorElementType::String
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 /// Adapter for common Rust string types to ONNX strings.
diff --git a/src/util.rs b/src/util.rs
index bfa11d9..ccf8c27 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -17,7 +17,7 @@ pub fn path_to_os_char(path: impl AsRef<Path>) -> OsCharArray {
 	let model_path: Vec<u16> = model_path.encode_wide().chain(std::iter::once(0)).collect();
 	#[cfg(not(target_family = "windows"))]
 	let model_path: Vec<c_char> = model_path
-		.as_encoded_bytes()
+		.as_bytes()
 		.iter()
 		.chain(std::iter::once(&b'\0'))
 		.map(|b| *b as c_char)
diff --git a/src/value/impl_map.rs b/src/value/impl_map.rs
index 930f5e6..6f132c4 100644
--- a/src/value/impl_map.rs
+++ b/src/value/impl_map.rs
@@ -20,7 +20,7 @@ use crate::{
 };
 
 pub trait MapValueTypeMarker: ValueTypeMarker {
-	crate::private_trait!();
+	private_trait!();
 }
 
 #[derive(Debug)]
@@ -30,10 +30,10 @@ impl ValueTypeMarker for DynMapValueType {
 		"DynMap".to_string()
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 impl MapValueTypeMarker for DynMapValueType {
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl DowncastableTarget for DynMapValueType {
@@ -41,7 +41,7 @@ impl DowncastableTarget for DynMapValueType {
 		matches!(dtype, ValueType::Map { .. })
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[derive(Debug)]
@@ -51,10 +51,10 @@ impl<K: IntoTensorElementType + Debug + Clone + Hash + Eq, V: IntoTensorElementT
 		format!("Map<{}, {}>", K::into_tensor_element_type(), V::into_tensor_element_type())
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 impl<K: IntoTensorElementType + Debug + Clone + Hash + Eq, V: IntoTensorElementType + Debug> MapValueTypeMarker for MapValueType<K, V> {
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<K: IntoTensorElementType + Debug + Clone + Hash + Eq, V: IntoTensorElementType + Debug> DowncastableTarget for MapValueType<K, V> {
@@ -65,7 +65,7 @@ impl<K: IntoTensorElementType + Debug + Clone + Hash + Eq, V: IntoTensorElementT
 		}
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 pub type DynMap = Value<DynMapValueType>;
diff --git a/src/value/impl_sequence.rs b/src/value/impl_sequence.rs
index c3aed0d..16e886d 100644
--- a/src/value/impl_sequence.rs
+++ b/src/value/impl_sequence.rs
@@ -14,7 +14,7 @@ use crate::{
 };
 
 pub trait SequenceValueTypeMarker: ValueTypeMarker {
-	crate::private_trait!();
+	private_trait!();
 }
 
 #[derive(Debug)]
@@ -24,10 +24,10 @@ impl ValueTypeMarker for DynSequenceValueType {
 		"DynSequence".to_string()
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 impl SequenceValueTypeMarker for DynSequenceValueType {
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl DowncastableTarget for DynSequenceValueType {
@@ -35,7 +35,7 @@ impl DowncastableTarget for DynSequenceValueType {
 		matches!(dtype, ValueType::Sequence { .. })
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[derive(Debug)]
@@ -45,10 +45,10 @@ impl<T: ValueTypeMarker + DowncastableTarget + Debug + ?Sized> ValueTypeMarker f
 		format!("Sequence<{}>", T::format())
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 impl<T: ValueTypeMarker + DowncastableTarget + Debug + ?Sized> SequenceValueTypeMarker for SequenceValueType<T> {
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: ValueTypeMarker + DowncastableTarget + Debug + ?Sized> DowncastableTarget for SequenceValueType<T> {
@@ -59,7 +59,7 @@ impl<T: ValueTypeMarker + DowncastableTarget + Debug + ?Sized> DowncastableTarge
 		}
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 pub type DynSequence = Value<DynSequenceValueType>;
diff --git a/src/value/impl_tensor/create.rs b/src/value/impl_tensor/create.rs
index 0d09914..4656f44 100644
--- a/src/value/impl_tensor/create.rs
+++ b/src/value/impl_tensor/create.rs
@@ -3,6 +3,7 @@ use std::{
 	ffi,
 	fmt::Debug,
 	marker::PhantomData,
+	mem::size_of,
 	ptr::{self, NonNull},
 	sync::Arc
 };
@@ -438,20 +439,20 @@ pub trait TensorArrayData<I> {
 	#[allow(clippy::type_complexity)]
 	fn ref_parts(&self) -> Result<(Vec<i64>, &[I], Option<Box<dyn Any>>)>;
 
-	crate::private_trait!();
+	private_trait!();
 }
 
 pub trait TensorArrayDataMut<I>: TensorArrayData<I> {
 	#[allow(clippy::type_complexity)]
 	fn ref_parts_mut(&mut self) -> Result<(Vec<i64>, &mut [I], Option<Box<dyn Any>>)>;
 
-	crate::private_trait!();
+	private_trait!();
 }
 
 pub trait OwnedTensorArrayData<I> {
 	fn into_parts(self) -> Result<TensorArrayDataParts<I>>;
 
-	crate::private_trait!();
+	private_trait!();
 }
 
 pub struct TensorArrayDataParts<I> {
@@ -531,7 +532,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayData<T> for &CowArra
 		Ok((shape, data, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -545,7 +546,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayData<T> for ArcArray
 		Ok((shape, data, Some(Box::new(self.clone()))))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -559,7 +560,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayData<T> for &Array<T
 		Ok((shape, data, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -573,7 +574,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayData<T> for &mut Arr
 		Ok((shape, data, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -598,7 +599,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> OwnedTensorArrayData<T> for Arr
 		}
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -612,7 +613,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayData<T> for ArrayVie
 		Ok((shape, data, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -626,7 +627,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayData<T> for ArrayVie
 		Ok((shape, data, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -640,7 +641,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayDataMut<T> for Array
 		Ok((shape, data, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[cfg(feature = "ndarray")]
@@ -654,7 +655,7 @@ impl<T: Clone + 'static, D: Dimension + 'static> TensorArrayDataMut<T> for &mut
 		Ok((shape, data, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, &[T]) {
@@ -663,7 +664,7 @@ impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, &[T]) {
 		Ok((shape, self.1, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, &mut [T]) {
@@ -672,7 +673,7 @@ impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, &mut [T]) {
 		Ok((shape, self.1, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: Clone + 'static, D: ToDimensions> TensorArrayDataMut<T> for (D, &mut [T]) {
@@ -681,7 +682,7 @@ impl<T: Clone + 'static, D: ToDimensions> TensorArrayDataMut<T> for (D, &mut [T]
 		Ok((shape, self.1, None))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: Clone + 'static, D: ToDimensions> OwnedTensorArrayData<T> for (D, Vec<T>) {
@@ -697,7 +698,7 @@ impl<T: Clone + 'static, D: ToDimensions> OwnedTensorArrayData<T> for (D, Vec<T>
 		})
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: Clone + 'static, D: ToDimensions> OwnedTensorArrayData<T> for (D, Box<[T]>) {
@@ -713,7 +714,7 @@ impl<T: Clone + 'static, D: ToDimensions> OwnedTensorArrayData<T> for (D, Box<[T
 		})
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, Arc<[T]>) {
@@ -723,7 +724,7 @@ impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, Arc<[T]>) {
 		Ok((shape, data, Some(Box::new(self.1.clone()))))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, Arc<Box<[T]>>) {
@@ -733,5 +734,5 @@ impl<T: Clone + 'static, D: ToDimensions> TensorArrayData<T> for (D, Arc<Box<[T]
 		Ok((shape, data, Some(Box::new(self.1.clone()))))
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
diff --git a/src/value/impl_tensor/extract.rs b/src/value/impl_tensor/extract.rs
index b2773a5..ae9f7da 100644
--- a/src/value/impl_tensor/extract.rs
+++ b/src/value/impl_tensor/extract.rs
@@ -46,8 +46,6 @@ impl<Type: TensorValueTypeMarker + ?Sized> Value<Type> {
 	#[cfg(feature = "ndarray")]
 	#[cfg_attr(docsrs, doc(cfg(feature = "ndarray")))]
 	pub fn try_extract_tensor<T: PrimitiveTensorElementType>(&self) -> Result<ndarray::ArrayViewD<'_, T>> {
-		use crate::AsPointer;
-
 		match self.dtype() {
 			ValueType::Tensor { ty, dimensions, .. } => {
 				let mem = self.memory_info();
diff --git a/src/value/impl_tensor/mod.rs b/src/value/impl_tensor/mod.rs
index c6509c4..9a27707 100644
--- a/src/value/impl_tensor/mod.rs
+++ b/src/value/impl_tensor/mod.rs
@@ -13,7 +13,7 @@ use super::{DowncastableTarget, DynValue, Value, ValueRef, ValueRefMut, ValueTyp
 use crate::{AsPointer, error::Result, memory::MemoryInfo, ortsys, tensor::IntoTensorElementType};
 
 pub trait TensorValueTypeMarker: ValueTypeMarker {
-	crate::private_trait!();
+	private_trait!();
 }
 
 #[derive(Debug)]
@@ -23,10 +23,10 @@ impl ValueTypeMarker for DynTensorValueType {
 		"DynTensor".to_string()
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 impl TensorValueTypeMarker for DynTensorValueType {
-	crate::private_impl!();
+	private_impl!();
 }
 
 #[derive(Debug)]
@@ -36,10 +36,10 @@ impl<T: IntoTensorElementType + Debug> ValueTypeMarker for TensorValueType<T> {
 		format!("Tensor<{}>", T::into_tensor_element_type())
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 impl<T: IntoTensorElementType + Debug> TensorValueTypeMarker for TensorValueType<T> {
-	crate::private_impl!();
+	private_impl!();
 }
 
 /// A tensor [`Value`] whose data type is unknown.
@@ -61,7 +61,7 @@ impl DowncastableTarget for DynTensorValueType {
 		matches!(dtype, ValueType::Tensor { .. })
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<Type: TensorValueTypeMarker + ?Sized> Value<Type> {
@@ -215,7 +215,7 @@ impl<T: IntoTensorElementType + Debug> DowncastableTarget for TensorValueType<T>
 		}
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 impl<T: IntoTensorElementType + Debug> From<Value<TensorValueType<T>>> for DynValue {
diff --git a/src/value/mod.rs b/src/value/mod.rs
index a865875..b4e720c 100644
--- a/src/value/mod.rs
+++ b/src/value/mod.rs
@@ -248,14 +248,14 @@ pub trait ValueTypeMarker {
 	#[doc(hidden)]
 	fn format() -> String;
 
-	crate::private_trait!();
+	private_trait!();
 }
 
 /// Represents a type that a [`DynValue`] can be downcast to.
 pub trait DowncastableTarget: ValueTypeMarker {
 	fn can_downcast(dtype: &ValueType) -> bool;
 
-	crate::private_trait!();
+	private_trait!();
 }
 
 // this implementation is used in case we want to extract `DynValue`s from a [`Sequence`]; see `try_extract_sequence`
@@ -264,7 +264,7 @@ impl DowncastableTarget for DynValueTypeMarker {
 		true
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 
 /// The dynamic type marker, used for values which can be of any type.
@@ -275,16 +275,16 @@ impl ValueTypeMarker for DynValueTypeMarker {
 		"DynValue".to_string()
 	}
 
-	crate::private_impl!();
+	private_impl!();
 }
 impl MapValueTypeMarker for DynValueTypeMarker {
-	crate::private_impl!();
+	private_impl!();
 }
 impl SequenceValueTypeMarker for DynValueTypeMarker {
-	crate::private_impl!();
+	private_impl!();
 }
 impl TensorValueTypeMarker for DynValueTypeMarker {
-	crate::private_impl!();
+	private_impl!();
 }
 
 unsafe impl<Type: ValueTypeMarker + ?Sized> Send for Value<Type> {}