diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index b32b234c5d33..5ca890c1753c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -1,6 +1,16 @@
 Changelog
 =========
 
+.. _v42-0-5:
+
+42.0.5 - 2024-02-23
+~~~~~~~~~~~~~~~~~~~
+
+* Limit the number of name constraint checks that will be performed in
+  :mod:`X.509 path validation <cryptography.x509.verification>` to protect
+  against denial of service attacks.
+* Upgrade ``pyo3`` version, which fixes building on PowerPC.
+
 .. _v42-0-4:
 
 42.0.4 - 2024-02-20
diff --git a/pyproject.toml b/pyproject.toml
index 6fce9b3403e7..33ad685e116f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "cryptography"
-version = "42.0.4"
+version = "42.0.5"
 authors = [
     {name = "The Python Cryptographic Authority and individual contributors", email = "cryptography-dev@python.org"}
 ]
diff --git a/src/cryptography/__about__.py b/src/cryptography/__about__.py
index b66092523d7d..b933afb35fd6 100644
--- a/src/cryptography/__about__.py
+++ b/src/cryptography/__about__.py
@@ -10,7 +10,7 @@
     "__copyright__",
 ]
 
-__version__ = "42.0.4"
+__version__ = "42.0.5"
 
 
 __author__ = "The Python Cryptographic Authority and individual contributors"
diff --git a/vectors/cryptography_vectors/__about__.py b/vectors/cryptography_vectors/__about__.py
index e2d51b38c0f4..0e2885894f4b 100644
--- a/vectors/cryptography_vectors/__about__.py
+++ b/vectors/cryptography_vectors/__about__.py
@@ -6,4 +6,4 @@
     "__version__",
 ]
 
-__version__ = "42.0.4"
+__version__ = "42.0.5"
diff --git a/vectors/pyproject.toml b/vectors/pyproject.toml
index 48cab55c51d1..1ec385878c74 100644
--- a/vectors/pyproject.toml
+++ b/vectors/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "flit_core.buildapi"
 
 [project]
 name = "cryptography_vectors"
-version = "42.0.4"
+version = "42.0.5"
 authors = [
     {name = "The Python Cryptographic Authority and individual contributors", email = "cryptography-dev@python.org"}
 ]