diff --git a/Cargo.lock b/Cargo.lock
index 3a0f168..8e32f57 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -783,7 +783,7 @@ dependencies = [
 
 [[package]]
 name = "module-lattice"
-version = "0.2.3"
+version = "0.2.4"
 dependencies = [
  "ctutils",
  "getrandom",
diff --git a/module-lattice/CHANGELOG.md b/module-lattice/CHANGELOG.md
index 74a1194..bc057b6 100644
--- a/module-lattice/CHANGELOG.md
+++ b/module-lattice/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.2.4 (2026-10-31)
+### Changed
+- Bump `ctutils` to v0.4.5; MSRV 1.87 ([#405])
+
+### Security
+- Harden reduction using `ctutils::{CtLt, CtSelect}` ([#409])
+
+[#405]: https://github.com/RustCrypto/KEMs/pull/405
+[#409]: https://github.com/RustCrypto/KEMs/pull/409
+
 ## 0.2.3 (2026-05-10)
 ### Added
 - `MaybeBox` type ([#309])
diff --git a/module-lattice/Cargo.toml b/module-lattice/Cargo.toml
index 0833941..2a0c031 100644
--- a/module-lattice/Cargo.toml
+++ b/module-lattice/Cargo.toml
@@ -5,7 +5,7 @@ Functionality shared between the `ml-kem` and `ml-dsa` crates, including linear
 degree-256 polynomials over a prime-order field, vectors of such polynomials, and NTT polynomials
 and vectors, as well as packing of polynomials into coefficients with a specified number of bits
 """
-version = "0.2.3"
+version = "0.2.4"
 edition = "2024"
 rust-version = "1.87"
 license = "Apache-2.0 OR MIT"