diff --git a/CHANGELOG.md b/CHANGELOG.md
index fd1f4457..f5f6dc5f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ 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).
 
-## [Unreleased](https://github.com/quartiq/miniconf/compare/v0.11.0...HEAD) - DATE
+## [0.12.0](https://github.com/quartiq/miniconf/compare/v0.11.0...v0.12.0) - 2024-07-09
 
 ### Changed
 
diff --git a/miniconf/Cargo.toml b/miniconf/Cargo.toml
index 9b47ca7e..03c67841 100644
--- a/miniconf/Cargo.toml
+++ b/miniconf/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "miniconf"
 # Sync all crate versions and the py client
-version = "0.11.0"
+version = "0.12.0"
 authors = ["James Irwin <irwineffect@gmail.com>", "Ryan Summers <ryan.summers@vertigo-designs.com>", "Robert Jördens <rj@quartiq.de>"]
 edition = "2021"
 license = "MIT"
@@ -13,7 +13,7 @@ resolver = "2"
 
 [dependencies]
 serde = { version = "1.0.120", default-features = false }
-miniconf_derive = { path = "../miniconf_derive", version = "0.11", optional = true }
+miniconf_derive = { path = "../miniconf_derive", version = "0.12", optional = true }
 itoa = "1.0.4"
 serde-json-core = { version = "0.5.1", optional = true }
 postcard = { version = "1.0.8", optional = true }
diff --git a/miniconf_cli/Cargo.toml b/miniconf_cli/Cargo.toml
index 7eab86b2..19b0a704 100644
--- a/miniconf_cli/Cargo.toml
+++ b/miniconf_cli/Cargo.toml
@@ -13,7 +13,7 @@ categories = ["no-std", "config", "rust-patterns", "parsing"]
 embedded-io = "0.6.1"
 embedded-io-async = "0.6.1"
 heapless = "0.8.0"
-miniconf = { version = "0.11.0", path = "../miniconf", features = [
+miniconf = { version = "0.12.0", path = "../miniconf", features = [
     "json-core",
     "postcard",
 ] }
diff --git a/miniconf_derive/Cargo.toml b/miniconf_derive/Cargo.toml
index 38686189..1febf28e 100644
--- a/miniconf_derive/Cargo.toml
+++ b/miniconf_derive/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "miniconf_derive"
-version = "0.11.0"
+version = "0.12.0"
 authors = ["James Irwin <irwineffect@gmail.com>", "Ryan Summers <ryan.summers@vertigo-designs.com>", "Robert Jördens <rj@quartiq.de>"]
 edition = "2021"
 license = "MIT"
diff --git a/miniconf_mqtt/Cargo.toml b/miniconf_mqtt/Cargo.toml
index 307a3775..72856015 100644
--- a/miniconf_mqtt/Cargo.toml
+++ b/miniconf_mqtt/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "miniconf_mqtt"
-version = "0.11.0"
+version = "0.12.0"
 authors = ["James Irwin <irwineffect@gmail.com>", "Ryan Summers <ryan.summers@vertigo-designs.com>", "Robert Jördens <rj@quartiq.de>"]
 edition = "2021"
 license = "MIT"
@@ -16,7 +16,7 @@ std = []
 [lib]
 
 [dependencies]
-miniconf = { version = "0.11", features = ["json-core"], default-features = false, path = "../miniconf" }
+miniconf = { version = "0.12", features = ["json-core"], default-features = false, path = "../miniconf" }
 minimq = "0.9.0"
 smlang = "0.7"
 embedded-io = "0.6"
diff --git a/py/miniconf-mqtt/pyproject.toml b/py/miniconf-mqtt/pyproject.toml
index 2d9e24ae..cf6082aa 100644
--- a/py/miniconf-mqtt/pyproject.toml
+++ b/py/miniconf-mqtt/pyproject.toml
@@ -8,7 +8,7 @@ text = "MIT"
 [project]
 name = "miniconf-mqtt"
 # Note: keep this in sync with Cargo.toml
-version = "0.11.0"
+version = "0.12.0"
 description = "Utilities for configuring Miniconf-configurable devices"
 authors = [
     { name = "Ryan Summers", email = "ryan.summers@vertigo-designs.com" },