diff --git a/CHANGELOG.md b/CHANGELOG.md
index c43cd1e1..e34f75c4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
 
-## [ Unreleased ] - ReleaseDate
+## [ 0.12.1 ] - 2023-12-21
 
 ### Fixed
 
diff --git a/README.md b/README.md
index a3de6ae6..91d2039f 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ your `Cargo.toml`:
 
 ```toml
 [dev-dependencies]
-mockall = "0.12.0"
+mockall = "0.12.1"
 ```
 
 Then use it like this:
diff --git a/mockall/Cargo.toml b/mockall/Cargo.toml
index 9483a409..a55fd883 100644
--- a/mockall/Cargo.toml
+++ b/mockall/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mockall"
-version = "0.12.0"
+version = "0.12.1"
 authors = ["Alan Somers <asomers@gmail.com>"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"