diff --git a/CHANGELOG.md b/CHANGELOG.md
index ef91ad9..3deee61 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## 2.0.0 - 2025-01-06
+### Added
+- Gated the sync/`Arc` downcasting functionality behind a new `sync` feature
+  that is enabled by default.
+- Added a new `DowncastSend` trait to support downcasting to `Box<Any + Send>`
+  and made `DowncastSync` extend this trait.
+- Added downcasting support to `Box<Any + Send + Sync>` to `DowncastSync`.
+
+### Change
+- Updated min supported rust version 1.56 to enforce the `rustdoc::bare_urls`
+  lint (1.53) and switch to edition 2021 (1.56).
+
 ## 1.2.1 - 2024-04-06
 ### Change
 - Consolidated bounds on the trait to avoid triggering Clippy's
@@ -22,6 +34,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## 1.1.0 - 2019-10-07
 ### Added
 - Support for downcasting `Rc<Trait>` and `Arc<Trait>`.
+
 ### Changed
 - Minimum supported Rust version upped to 1.33 to support `Rc` and `Arc` in the
   receiver position.
diff --git a/Cargo.toml b/Cargo.toml
index 1737262..9ed78c7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "downcast-rs"
 edition = "2021"
-version = "1.2.1"
+version = "2.0.0"
 rust-version = "1.56"
 repository = "https://github.com/marcianx/downcast-rs"
 description = """
diff --git a/README.md b/README.md
index 3bcd344..553aad0 100644
--- a/README.md
+++ b/README.md
@@ -19,21 +19,21 @@ Add the following to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-downcast-rs = "1.2.1"
+downcast-rs = "2.0.0"
 ```
 
 This crate is `no_std` compatible. To use it without `std`:
 
 ```toml
 [dependencies]
-downcast-rs = { version = "1.2.1", default-features = false }
+downcast-rs = { version = "2.0.0", default-features = false }
 ```
 
 To make a trait downcastable, make it extend either `downcast::Downcast` or
 `downcast::DowncastSync` and invoke `impl_downcast!` on it as in the examples
 below.
 
-Since 1.2.0, the minimum supported Rust version is 1.36 due to needing stable access to alloc.
+Since 2.0.0, the minimum supported Rust version is 1.56.
 
 ## #[macro_use]
 ## extern crate downcast_rs;
diff --git a/src/lib.rs b/src/lib.rs
index ef61c17..e173031 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,21 +19,21 @@
 //!
 //! ```toml
 //! [dependencies]
-//! downcast-rs = "1.2.1"
+//! downcast-rs = "2.0.0"
 //! ```
 //!
 //! This crate is `no_std` compatible. To use it without `std`:
 //!
 //! ```toml
 //! [dependencies]
-//! downcast-rs = { version = "1.2.1", default-features = false }
+//! downcast-rs = { version = "2.0.0", default-features = false }
 //! ```
 //!
 //! To make a trait downcastable, make it extend either `downcast::Downcast` or
 //! `downcast::DowncastSync` and invoke `impl_downcast!` on it as in the examples
 //! below.
 //!
-//! Since 1.2.0, the minimum supported Rust version is 1.36 due to needing stable access to alloc.
+//! Since 2.0.0, the minimum supported Rust version is 1.56.
 //!
 #![cfg_attr(feature = "sync", doc = "```")]
 #![cfg_attr(not(feature = "sync"), doc = "```ignore")]