diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6f4ce218..86055a9a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,20 @@ To see unreleased changes, please see the [CHANGELOG on the main branch guide](h
 
 <!-- towncrier release notes start -->
 
+## [0.21.2] - 2024-04-16
+
+### Changed
+
+- Deprecate the `PySet::empty()` gil-ref constructor. [#4082](https://github.com/PyO3/pyo3/pull/4082)
+
+### Fixed
+
+- Fix compile error for `async fn` in `#[pymethods]` with a `&self` receiver and more than one additional argument. [#4035](https://github.com/PyO3/pyo3/pull/4035)
+- Improve error message for wrong receiver type in `__traverse__`. [#4045](https://github.com/PyO3/pyo3/pull/4045)
+- Fix compile error when exporting a `#[pyclass]` living in a different Rust module using the `experimental-declarative-modules` feature. [#4054](https://github.com/PyO3/pyo3/pull/4054)
+- Fix `missing_docs` lint triggering on documented `#[pymodule]` functions. [#4067](https://github.com/PyO3/pyo3/pull/4067)
+- Fix undefined symbol errors for extension modules on AIX (by linking `libpython`). [#4073](https://github.com/PyO3/pyo3/pull/4073)
+
 ## [0.21.1] - 2024-04-01
 
 ### Added
@@ -1731,7 +1745,8 @@ Yanked
 
 - Initial release
 
-[Unreleased]: https://github.com/pyo3/pyo3/compare/v0.21.1...HEAD
+[Unreleased]: https://github.com/pyo3/pyo3/compare/v0.21.2...HEAD
+[0.21.2]: https://github.com/pyo3/pyo3/compare/v0.21.1...v0.21.2
 [0.21.1]: https://github.com/pyo3/pyo3/compare/v0.21.0...v0.21.1
 [0.21.0]: https://github.com/pyo3/pyo3/compare/v0.20.3...v0.21.0
 [0.21.0-beta.0]: https://github.com/pyo3/pyo3/compare/v0.20.3...v0.21.0-beta.0
diff --git a/Cargo.toml b/Cargo.toml
index fdd1fa9d..858df658 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyo3"
-version = "0.21.1"
+version = "0.21.2"
 description = "Bindings to Python interpreter"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 readme = "README.md"
@@ -22,10 +22,10 @@ memoffset = "0.9"
 portable-atomic = "1.0"
 
 # ffi bindings to the python interpreter, split into a separate crate so they can be used independently
-pyo3-ffi = { path = "pyo3-ffi", version = "=0.21.1" }
+pyo3-ffi = { path = "pyo3-ffi", version = "=0.21.2" }
 
 # support crates for macros feature
-pyo3-macros = { path = "pyo3-macros", version = "=0.21.1", optional = true }
+pyo3-macros = { path = "pyo3-macros", version = "=0.21.2", optional = true }
 indoc = { version = "2.0.1", optional = true }
 unindent = { version = "0.2.1", optional = true }
 
@@ -60,7 +60,7 @@ rayon = "1.6.1"
 futures = "0.3.28"
 
 [build-dependencies]
-pyo3-build-config = { path = "pyo3-build-config", version = "=0.21.1", features = ["resolve-config"] }
+pyo3-build-config = { path = "pyo3-build-config", version = "=0.21.2", features = ["resolve-config"] }
 
 [features]
 default = ["macros"]
diff --git a/README.md b/README.md
index 8e7e2f75..4da2447e 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,7 @@ name = "string_sum"
 crate-type = ["cdylib"]
 
 [dependencies]
-pyo3 = { version = "0.21.1", features = ["extension-module"] }
+pyo3 = { version = "0.21.2", 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 = "0.21.1"
+version = "0.21.2"
 features = ["auto-initialize"]
 ```
 
diff --git a/examples/decorator/.template/pre-script.rhai b/examples/decorator/.template/pre-script.rhai
index 1dc689ef..37372854 100644
--- a/examples/decorator/.template/pre-script.rhai
+++ b/examples/decorator/.template/pre-script.rhai
@@ -1,4 +1,4 @@
-variable::set("PYO3_VERSION", "0.21.1");
+variable::set("PYO3_VERSION", "0.21.2");
 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 1dc689ef..37372854 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", "0.21.1");
+variable::set("PYO3_VERSION", "0.21.2");
 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 78adb883..7c2f375f 100644
--- a/examples/plugin/.template/pre-script.rhai
+++ b/examples/plugin/.template/pre-script.rhai
@@ -1,4 +1,4 @@
-variable::set("PYO3_VERSION", "0.21.1");
+variable::set("PYO3_VERSION", "0.21.2");
 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 212f62f7..dd295066 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", "0.21.1");
+variable::set("PYO3_VERSION", "0.21.2");
 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 1dc689ef..37372854 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", "0.21.1");
+variable::set("PYO3_VERSION", "0.21.2");
 file::rename(".template/Cargo.toml", "Cargo.toml");
 file::rename(".template/pyproject.toml", "pyproject.toml");
 file::delete(".template");
diff --git a/newsfragments/4035.fixed.md b/newsfragments/4035.fixed.md
deleted file mode 100644
index 5425c5cb..00000000
--- a/newsfragments/4035.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-Fix compile error for `async fn` in `#[pymethods]` with a `&self` receiver and more than one additional argument.
diff --git a/newsfragments/4045.fixed.md b/newsfragments/4045.fixed.md
deleted file mode 100644
index 6b2bbcfa..00000000
--- a/newsfragments/4045.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-Add better error message on wrong receiver extraction in `__traverse__`.
diff --git a/newsfragments/4054.fixed.md b/newsfragments/4054.fixed.md
deleted file mode 100644
index 4b8da92c..00000000
--- a/newsfragments/4054.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-Fixes a compile error when exporting a `#[pyclass]` living in a different Rust module using the declarative-module feature.
diff --git a/newsfragments/4067.fixed.md b/newsfragments/4067.fixed.md
deleted file mode 100644
index 869b6add..00000000
--- a/newsfragments/4067.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-fixes `missing_docs` lint to trigger on documented `#[pymodule]` functions
\ No newline at end of file
diff --git a/newsfragments/4073.fixed.md b/newsfragments/4073.fixed.md
deleted file mode 100644
index 0f77647e..00000000
--- a/newsfragments/4073.fixed.md
+++ /dev/null
@@ -1 +0,0 @@
-fixes undefined symbol errors when building extension module on AIX by linking `libpython`
diff --git a/newsfragments/4082.changed.md b/newsfragments/4082.changed.md
deleted file mode 100644
index 231ea0ae..00000000
--- a/newsfragments/4082.changed.md
+++ /dev/null
@@ -1 +0,0 @@
-Deprecate the `PySet::empty()` gil-ref constructor.
diff --git a/pyo3-build-config/Cargo.toml b/pyo3-build-config/Cargo.toml
index 1eb269c2..22621c4a 100644
--- a/pyo3-build-config/Cargo.toml
+++ b/pyo3-build-config/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyo3-build-config"
-version = "0.21.1"
+version = "0.21.2"
 description = "Build configuration for the PyO3 ecosystem"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 keywords = ["pyo3", "python", "cpython", "ffi"]
diff --git a/pyo3-ffi/Cargo.toml b/pyo3-ffi/Cargo.toml
index 64753976..8f776725 100644
--- a/pyo3-ffi/Cargo.toml
+++ b/pyo3-ffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyo3-ffi"
-version = "0.21.1"
+version = "0.21.2"
 description = "Python-API bindings for the PyO3 ecosystem"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 keywords = ["pyo3", "python", "cpython", "ffi"]
@@ -38,7 +38,7 @@ abi3-py312 = ["abi3", "pyo3-build-config/abi3-py312"]
 generate-import-lib = ["pyo3-build-config/python3-dll-a"]
 
 [build-dependencies]
-pyo3-build-config = { path = "../pyo3-build-config", version = "=0.21.1", features = ["resolve-config"] }
+pyo3-build-config = { path = "../pyo3-build-config", version = "=0.21.2", features = ["resolve-config"] }
 
 [lints]
 workspace = true
diff --git a/pyo3-macros-backend/Cargo.toml b/pyo3-macros-backend/Cargo.toml
index 6ca4eead..f2675f2b 100644
--- a/pyo3-macros-backend/Cargo.toml
+++ b/pyo3-macros-backend/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyo3-macros-backend"
-version = "0.21.1"
+version = "0.21.2"
 description = "Code generation for PyO3 package"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 keywords = ["pyo3", "python", "cpython", "ffi"]
@@ -16,7 +16,7 @@ edition = "2021"
 [dependencies]
 heck = "0.4"
 proc-macro2 = { version = "1", default-features = false }
-pyo3-build-config = { path = "../pyo3-build-config", version = "=0.21.1", features = ["resolve-config"] }
+pyo3-build-config = { path = "../pyo3-build-config", version = "=0.21.2", features = ["resolve-config"] }
 quote = { version = "1", default-features = false }
 
 [dependencies.syn]
diff --git a/pyo3-macros/Cargo.toml b/pyo3-macros/Cargo.toml
index 39a4b919..690924c7 100644
--- a/pyo3-macros/Cargo.toml
+++ b/pyo3-macros/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "pyo3-macros"
-version = "0.21.1"
+version = "0.21.2"
 description = "Proc macros for PyO3 package"
 authors = ["PyO3 Project and Contributors <https://github.com/PyO3>"]
 keywords = ["pyo3", "python", "cpython", "ffi"]
@@ -22,7 +22,7 @@ experimental-declarative-modules = []
 proc-macro2 = { version = "1", default-features = false }
 quote = "1"
 syn = { version = "2", features = ["full", "extra-traits"] }
-pyo3-macros-backend = { path = "../pyo3-macros-backend", version = "=0.21.1" }
+pyo3-macros-backend = { path = "../pyo3-macros-backend", version = "=0.21.2" }
 
 [lints]
 workspace = true
diff --git a/pyproject.toml b/pyproject.toml
index d474753c..9a70116f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@
 
 [tool.towncrier]
 filename = "CHANGELOG.md"
-version = "0.21.1"
+version = "0.21.2"
 start_string = "<!-- towncrier release notes start -->\n"
 template = ".towncrier.template.md"
 title_format = "## [{version}] - {project_date}"