diff --git a/Cargo.lock b/Cargo.lock
index 55e90c71d..7768b784f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1021,7 +1021,7 @@ checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
 
 [[package]]
 name = "maturin"
-version = "0.12.3-beta.2"
+version = "0.12.3"
 dependencies = [
  "anyhow",
  "base64",
diff --git a/Cargo.toml b/Cargo.toml
index 3a533edb3..a4ea70e4b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 authors = ["konstin <konstin@mailbox.org>"]
 name = "maturin"
-version = "0.12.3-beta.2"
+version = "0.12.3"
 description = "Build and publish crates with pyo3, rust-cpython and cffi bindings as well as rust binaries as python packages"
 exclude = ["test-crates/**/*", "sysconfig/*", "test-data/*", "ci/*", "tests/*"]
 homepage = "https://github.com/pyo3/maturin"
diff --git a/Changelog.md b/Changelog.md
index 245aebb70..f52416ce4 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.12.3] - 2021-11-29
+
 * Use platform tag from `sysconfig.platform` on non-portable Linux in [#709](https://github.com/PyO3/maturin/pull/709)
 * Consider current machine architecture when generating platform tags for abi3
   wheels on linux in [#709](https://github.com/PyO3/maturin/pull/709)
@@ -490,7 +492,8 @@ points-0.1.0-py2.py3-none-manylinux1_x86_64.whl | 2,8M | 752K | 85K
 
  * Initial Release
 
-[Unreleased]: https://github.com/pyo3/maturin/compare/v0.12.2...HEAD
+[Unreleased]: https://github.com/pyo3/maturin/compare/v0.12.3...HEAD
+[0.12.3]: https://github.com/pyo3/maturin/compare/v0.12.2...v0.12.3
 [0.12.2]: https://github.com/pyo3/maturin/compare/v0.12.1...v0.12.2
 [0.12.1]: https://github.com/pyo3/maturin/compare/v0.12.0...v0.12.1
 [0.12.0]: https://github.com/pyo3/maturin/compare/v0.11.5...v0.12.0
diff --git a/guide/src/sphinx.md b/guide/src/sphinx.md
index 1c64e8246..5319fee7b 100644
--- a/guide/src/sphinx.md
+++ b/guide/src/sphinx.md
@@ -51,7 +51,7 @@ Python project path to `sys.path` in `conf.py` of Sphinx. Read The Docs
 doesn't install your project in editable mode, adding it to `sys.path` will make
 your project fail to import which breaks documentation generation.
 
-If you need to install a specified version of Sphinx or adding Sphinx
+If you need to install a specific version of Sphinx or adding Sphinx
 themes/extensions, you can change the `python.install` section a bit to add an
 extra installation step, for example: