diff --git a/Cargo.toml b/Cargo.toml
index 7553bc5e..6e276b2e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,9 +22,6 @@ rustdoc-args = ["--cfg", "docsrs"]
 objc = { version = "=0.3.0-beta.1", package = "objc2" }
 block = { version = "=0.2.0-alpha.5", package = "block2" }
 objc2-foundation = "=0.2.0-alpha.6"
-# Temporary: Patched versions that implement `Encode` for common types
-# Branch: `objc2`
-core-foundation = { git = "https://github.com/madsmtm/core-foundation-rs.git", rev = "c506e7d70da010c0070048e9471ff0b441506e65", features = ["with-chrono"] }
 dispatch = "0.2.0"
 infer = { version = "0.4", optional = true }
 lazy_static = "1.4.0"
@@ -37,7 +34,7 @@ uuid = { version = "0.8", features = ["v4"], optional = true }
 eval = "0.4"
 
 [features]
-appkit = ["core-foundation/mac_os_10_8_features"]
+appkit = []
 uikit = []
 autolayout = []
 default = ["appkit", "autolayout"]
diff --git a/README.md b/README.md
index 261c5d95..1a3746b9 100644
--- a/README.md
+++ b/README.md
@@ -109,7 +109,7 @@ The following are a list of [Cargo features][cargo-features] that can be enabled
 
 ## General Notes
 **Why not extend the existing cocoa-rs crate?**
-A good question. At the end of the day, that crate (I believe, and someone can correct me if I'm wrong) is somewhat tied to Servo, and I wanted to experiment with what the best approach for representing the Cocoa UI model in Rust was. This crate doesn't ignore their work entirely, either - `core_foundation` is used internally and re-exported for general use.
+A good question. At the end of the day, that crate (I believe, and someone can correct me if I'm wrong) is somewhat tied to Servo, and I wanted to experiment with what the best approach for representing the Cocoa UI model in Rust was.
 
 **Why should I write in Rust, rather than X language?**
 In _my_ case, I want to be able to write native applications for my devices (and the platform I like to build products for) without being locked in to writing in Apple-specific languages... and without writing in C/C++ or JavaScript (note: the _toolchain_, not the language - ES6/Typescript are fine). I want to do this because I'm tired of hitting a mountain of work when I want to port my applications to other ecosystems. I think that Rust offers a (growing, but significant) viable model for sharing code across platforms and ecosystems without sacrificing performance.
diff --git a/src/button/mod.rs b/src/button/mod.rs
index f6198b71..241e99ba 100644
--- a/src/button/mod.rs
+++ b/src/button/mod.rs
@@ -241,7 +241,7 @@ impl Button {
         #[cfg(feature = "appkit")]
         self.objc.with_mut(move |obj| unsafe {
             let text: id = msg_send![obj, attributedTitle];
-            let len: isize = msg_send![text, length];
+            let len: usize = msg_send![text, length];
 
             let mut attr_str = AttributedString::wrap(text);
             attr_str.set_text_color(color.as_ref(), 0..len);
diff --git a/src/lib.rs b/src/lib.rs
index 12eb003d..2a8ac0b4 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -90,7 +90,6 @@
 //!
 //! [cargo-features]: https://doc.rust-lang.org/stable/cargo/reference/manifest.html#the-features-section
 
-pub use core_foundation;
 pub use lazy_static;
 pub use objc;
 pub use url;
diff --git a/src/text/attributed_string.rs b/src/text/attributed_string.rs
index a3624d56..cd84311f 100644
--- a/src/text/attributed_string.rs
+++ b/src/text/attributed_string.rs
@@ -6,10 +6,10 @@ use std::{fmt, slice, str};
 use objc::rc::{Id, Owned};
 use objc::runtime::Object;
 use objc::{class, msg_send, msg_send_id, sel};
+use objc2_foundation::NSRange;
 
 use crate::color::Color;
 use crate::foundation::{id, to_bool, NSString, BOOL, NO, YES};
-use crate::utils::CFRange;
 
 use super::Font;
 
@@ -43,9 +43,9 @@ impl AttributedString {
     }
 
     /// Sets the text (foreground) color for the specified range.
-    pub fn set_text_color<C: AsRef<Color>>(&mut self, color: C, range: Range<isize>) {
+    pub fn set_text_color<C: AsRef<Color>>(&mut self, color: C, range: Range<usize>) {
         let color: id = color.as_ref().into();
-        let range = CFRange::init(range.start, range.end);
+        let range = NSRange::from(range);
 
         unsafe {
             let _: () = msg_send![
@@ -58,8 +58,8 @@ impl AttributedString {
     }
 
     /// Set the font for the specified range.
-    pub fn set_font(&mut self, font: Font, range: Range<isize>) {
-        let range = CFRange::init(range.start, range.end);
+    pub fn set_font(&mut self, font: Font, range: Range<usize>) {
+        let range = NSRange::from(range);
 
         unsafe {
             let _: () = msg_send![
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 8e68555d..187b5362 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -2,8 +2,6 @@
 //! belong to. These are typically internal, and if you rely on them... well, don't be surprised if
 //! they go away one day.
 
-use core_foundation::base::CFIndex;
-
 use objc::rc::{Id, Shared};
 use objc::runtime::Object;
 use objc::{class, msg_send, sel};
@@ -66,26 +64,6 @@ where
     queue.exec_sync(method);
 }
 
-#[repr(C)]
-#[derive(Clone, Copy, Debug, Default, PartialEq)]
-pub struct CFRange {
-    pub location: CFIndex,
-    pub length: CFIndex
-}
-
-impl CFRange {
-    pub fn init(location: CFIndex, length: CFIndex) -> CFRange {
-        CFRange {
-            location: location,
-            length: length
-        }
-    }
-}
-
-unsafe impl Encode for CFRange {
-    const ENCODING: Encoding<'static> = Encoding::Struct("CFRange", &[CFIndex::ENCODING, CFIndex::ENCODING]);
-}
-
 /// A helper method for ensuring that Cocoa is running in multi-threaded mode.
 ///
 /// Why do we need this? According to Apple, if you're going to make use of standard POSIX threads,