diff --git a/CHANGELOG.md b/CHANGELOG.md
index 85e95f3..2a05563 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,7 +12,7 @@ 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).
 
 
-## [Unreleased]
+## [0.22.1] - 2023-12-20
 
 ### Fixed
 - The `Cargo.lock` file is now updated before a new version is released (GitHub bug #103).
diff --git a/Cargo.lock b/Cargo.lock
index 111ee4a..79fdb5c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "acme_common"
-version = "0.21.0"
+version = "0.22.1"
 dependencies = [
  "base64",
  "daemonize",
@@ -25,7 +25,7 @@ dependencies = [
 
 [[package]]
 name = "acmed"
-version = "0.21.0"
+version = "0.22.1"
 dependencies = [
  "acme_common",
  "async-lock 3.2.0",
@@ -1442,7 +1442,7 @@ dependencies = [
 
 [[package]]
 name = "tacd"
-version = "0.21.0"
+version = "0.22.1"
 dependencies = [
  "acme_common",
  "anyhow",
diff --git a/acme_common/Cargo.toml b/acme_common/Cargo.toml
index fe5283c..a711b4d 100644
--- a/acme_common/Cargo.toml
+++ b/acme_common/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "acme_common"
-version = "0.22.0"
+version = "0.22.1"
 authors = ["Rodolphe Breard <rodolphe@what.tf>"]
 edition = "2018"
 readme = "../README.md"
diff --git a/acmed/Cargo.toml b/acmed/Cargo.toml
index 59631bf..b73dc7b 100644
--- a/acmed/Cargo.toml
+++ b/acmed/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "acmed"
-version = "0.22.0"
+version = "0.22.1"
 authors = ["Rodolphe Breard <rodolphe@what.tf>"]
 edition = "2018"
 description = "ACME (RFC 8555) client daemon"
diff --git a/tacd/Cargo.toml b/tacd/Cargo.toml
index 67cc52d..120d26a 100644
--- a/tacd/Cargo.toml
+++ b/tacd/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tacd"
-version = "0.22.0"
+version = "0.22.1"
 authors = ["Rodolphe Breard <rodolphe@what.tf>"]
 edition = "2018"
 description = "TLS-ALPN Challenge Daemon"