diff --git a/src/device.rs b/src/device.rs
index 11b5575..75061cc 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -8,8 +8,7 @@
 use super::*;
 
 use block::{Block, ConcreteBlock};
-use foreign_types::ForeignType;
-use objc::runtime::{Object, NO, YES};
+use objc::runtime::{NO, YES};
 
 use std::{ffi::CStr, os::raw::c_char, path::Path, ptr};
 
diff --git a/src/lib.rs b/src/lib.rs
index b79acf6..535c01d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -20,13 +20,7 @@ pub extern crate foreign_types;
 #[macro_use]
 pub extern crate paste;
 
-use std::{
-    borrow::{Borrow, ToOwned},
-    marker::PhantomData,
-    mem,
-    ops::Deref,
-    os::raw::c_void,
-};
+use std::{borrow::Borrow, marker::PhantomData, mem, ops::Deref, os::raw::c_void};
 
 use core_graphics_types::{base::CGFloat, geometry::CGSize};
 use foreign_types::ForeignType;
diff --git a/src/library.rs b/src/library.rs
index 2c7d0c9..9f7d58c 100644
--- a/src/library.rs
+++ b/src/library.rs
@@ -7,11 +7,10 @@
 
 use super::*;
 
-use foreign_types::ForeignType;
-use objc::runtime::{Object, BOOL, NO, YES};
+use objc::runtime::{BOOL, NO, YES};
 
 use std::ffi::CStr;
-use std::os::raw::{c_char, c_void};
+use std::os::raw::c_char;
 use std::ptr;
 
 /// Only available on (macos(10.12), ios(10.0)
@@ -361,6 +360,10 @@ pub enum MTLLanguageVersion {
     V2_3 = 0x20003,
     /// available on macOS 12.0+, iOS 15.0+
     V2_4 = 0x20004,
+    /// available on macOS 13.0+, iOS 16.0+
+    V3_0 = 0x30000,
+    /// available on macOS 14.0+, iOS 17.0+
+    V3_1 = 0x30001,
 }
 
 /// See <https://developer.apple.com/documentation/metal/mtlfunctionconstantvalues/>
diff --git a/src/mps.rs b/src/mps.rs
index edd4936..f4c9fc8 100644
--- a/src/mps.rs
+++ b/src/mps.rs
@@ -7,9 +7,12 @@
 
 use super::*;
 
-use objc::runtime::{BOOL, YES};
+use objc::runtime::BOOL;
 
-#[cfg_attr(feature = "link", link(name = "MetalPerformanceShaders", kind = "framework"))]
+#[cfg_attr(
+    feature = "link",
+    link(name = "MetalPerformanceShaders", kind = "framework")
+)]
 extern "C" {
     fn MPSSupportsMTLDevice(device: *const std::ffi::c_void) -> BOOL;
 }
diff --git a/src/sync.rs b/src/sync.rs
index 284fd90..c368048 100644
--- a/src/sync.rs
+++ b/src/sync.rs
@@ -7,7 +7,6 @@
 
 use super::*;
 use block::{Block, RcBlock};
-use std::mem;
 use std::ptr;
 
 #[cfg(feature = "dispatch_queue")]