diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9104db29..295a0353 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,18 @@ To see unreleased changes, please see the [CHANGELOG on the main branch guide](h
 
 <!-- towncrier release notes start -->
 
+## [0.20.3] - 2024-02-23
+
+### Packaging
+
+- Add `portable-atomic` dependency. [#3619](https://github.com/PyO3/pyo3/pull/3619)
+- Check maximum version of Python at build time and for versions not yet supported require opt-in to the `abi3` stable ABI by the environment variable `PYO3_USE_ABI3_FORWARD_COMPATIBILITY=1`. [#3821](https://github.com/PyO3/pyo3/pull/3821)
+
+### Fixed
+
+- Use `portable-atomic` to support platforms without 64-bit atomics. [#3619](https://github.com/PyO3/pyo3/pull/3619)
+- Fix compilation failure with `either` feature enabled without `experimental-inspect` enabled. [#3834](https://github.com/PyO3/pyo3/pull/3834)
+
 ## [0.20.2] - 2024-01-04
 
 ### Packaging
@@ -1628,7 +1640,8 @@ Yanked
 
 - Initial release
 
-[Unreleased]: https://github.com/pyo3/pyo3/compare/v0.20.2...HEAD
+[Unreleased]: https://github.com/pyo3/pyo3/compare/v0.20.3...HEAD
+[0.20.3]: https://github.com/pyo3/pyo3/compare/v0.20.2...v0.20.3
 [0.20.2]: https://github.com/pyo3/pyo3/compare/v0.20.1...v0.20.2
 [0.20.1]: https://github.com/pyo3/pyo3/compare/v0.20.0...v0.20.1
 [0.20.0]: https://github.com/pyo3/pyo3/compare/v0.19.2...v0.20.0
diff --git a/README.md b/README.md
index 21e09157..6769025e 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ name = "string_sum"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.20.2", features = ["extension-module"] }
+pyo3 = { version = "0.20.3", features = ["extension-module"] }
 ```
 
 **`src/lib.rs`**
@@ -137,7 +137,7 @@ Start a new project with `cargo new` and add  `pyo3` to the `Cargo.toml` like th
 
 ```toml
 [dependencies.pyo3]
-version = "0.20.2"
+version = "0.20.3"
 features = ["auto-initialize"]
 ```
 
diff --git a/examples/decorator/.template/pre-script.rhai b/examples/decorator/.template/pre-script.rhai
index 12b203c3..f059903c 100644
--- a/examples/decorator/.template/pre-script.rhai
+++ b/examples/decorator/.template/pre-script.rhai
@@ -1,4 +1,4 @@
-variable::set("PYO3_VERSION", "0.20.2");
+variable::set("PYO3_VERSION", "0.20.3");
 file::rename(".template/Cargo.toml", "Cargo.toml");
 file::rename(".template/pyproject.toml", "pyproject.toml");
 file::delete(".template");
diff --git a/examples/maturin-starter/.template/pre-script.rhai b/examples/maturin-starter/.template/pre-script.rhai
index 12b203c3..f059903c 100644
--- a/examples/maturin-starter/.template/pre-script.rhai
+++ b/examples/maturin-starter/.template/pre-script.rhai
@@ -1,4 +1,4 @@
-variable::set("PYO3_VERSION", "0.20.2");
+variable::set("PYO3_VERSION", "0.20.3");
 file::rename(".template/Cargo.toml", "Cargo.toml");
 file::rename(".template/pyproject.toml", "pyproject.toml");
 file::delete(".template");
diff --git a/examples/plugin/.template/pre-script.rhai b/examples/plugin/.template/pre-script.rhai
index 72cfe2be..90989a89 100644
--- a/examples/plugin/.template/pre-script.rhai
+++ b/examples/plugin/.template/pre-script.rhai
@@ -1,4 +1,4 @@
-variable::set("PYO3_VERSION", "0.20.2");
+variable::set("PYO3_VERSION", "0.20.3");
 file::rename(".template/Cargo.toml", "Cargo.toml");
 file::rename(".template/plugin_api/Cargo.toml", "plugin_api/Cargo.toml");
 file::delete(".template");
diff --git a/examples/setuptools-rust-starter/.template/pre-script.rhai b/examples/setuptools-rust-starter/.template/pre-script.rhai
index 78a65655..d5520ae1 100644
--- a/examples/setuptools-rust-starter/.template/pre-script.rhai
+++ b/examples/setuptools-rust-starter/.template/pre-script.rhai
@@ -1,4 +1,4 @@
-variable::set("PYO3_VERSION", "0.20.2");
+variable::set("PYO3_VERSION", "0.20.3");
 file::rename(".template/Cargo.toml", "Cargo.toml");
 file::rename(".template/setup.cfg", "setup.cfg");
 file::delete(".template");
diff --git a/examples/word-count/.template/pre-script.rhai b/examples/word-count/.template/pre-script.rhai
index 12b203c3..f059903c 100644
--- a/examples/word-count/.template/pre-script.rhai
+++ b/examples/word-count/.template/pre-script.rhai
@@ -1,4 +1,4 @@
-variable::set("PYO3_VERSION", "0.20.2");
+variable::set("PYO3_VERSION", "0.20.3");
 file::rename(".template/Cargo.toml", "Cargo.toml");
 file::rename(".template/pyproject.toml", "pyproject.toml");
 file::delete(".template");
diff --git a/newsfragments/3619.fixed.md b/newsfragments/3619.fixed.md
deleted file mode 100644
index 69054240..00000000
--- a/newsfragments/3619.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-Use portable-atomic to support platforms without 64-bit atomics
diff --git a/newsfragments/3821.packaging.md b/newsfragments/3821.packaging.md
deleted file mode 100644
index 4bd89355..00000000
--- a/newsfragments/3821.packaging.md
+++ /dev/null
@@ -1 +0,0 @@
-Check maximum version of Python at build time and for versions not yet supported require opt-in to the `abi3` stable ABI by the environment variable `PYO3_USE_ABI3_FORWARD_COMPATIBILITY=1`.
diff --git a/newsfragments/3834.fixed.md b/newsfragments/3834.fixed.md
deleted file mode 100644
index fa77e84f..00000000
--- a/newsfragments/3834.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-Fix compilation failure with `either` feature enabled without `experimental-inspect` enabled.