diff --git a/Cargo.lock b/Cargo.lock
index c2501ce33..c6e0275ab 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1383,7 +1383,7 @@ dependencies = [
  "der",
  "hex-literal",
  "hybrid-array",
- "serdect 0.4.0",
+ "serdect 0.4.1",
  "subtle",
  "tempfile",
  "zeroize",
@@ -1458,7 +1458,7 @@ dependencies = [
 
 [[package]]
 name = "serdect"
-version = "0.4.0"
+version = "0.4.1"
 dependencies = [
  "base16ct 0.3.0",
  "bincode",
diff --git a/serdect/CHANGELOG.md b/serdect/CHANGELOG.md
index 7edd5cb01..812e920de 100644
--- a/serdect/CHANGELOG.md
+++ b/serdect/CHANGELOG.md
@@ -4,6 +4,12 @@ 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).
 
+## 0.4.1 (2025-09-01)
+### Changed
+- Bump `base16ct` to v0.3 ([#2017])
+
+[#2017]: https://github.com/RustCrypto/formats/pull/2017
+
 ## 0.4.0 (2025-08-20)
 ### Changed
 - Upgrade to the 2024 edition; MSRV 1.85 ([#1670])
diff --git a/serdect/Cargo.toml b/serdect/Cargo.toml
index e59910fb5..e933522c0 100644
--- a/serdect/Cargo.toml
+++ b/serdect/Cargo.toml
@@ -4,7 +4,7 @@ description = """
 Constant-time serde serializer/deserializer helpers for data that potentially
 contains secrets (e.g. cryptographic keys)
 """
-version = "0.4.0"
+version = "0.4.1"
 authors = ["RustCrypto Developers"]
 license = "Apache-2.0 OR MIT"
 homepage = "https://github.com/RustCrypto/formats/tree/master/serdect"