diff --git a/CHANGELOG.md b/CHANGELOG.md
index fefa5e4..c1d8439 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 This project roughly adheres to [Semantic Versioning](http://semver.org/). For 0.x.y releases, `x` is the major version in semver, while `y` is the minor version.
 
-## Unreleased
+## 0.3.1 - 2024-06-19
 
 * Derive Hash, Ord, PartialOrd for SimpleError
 * Add rust-version field to Cargo.toml with 1.58.0
diff --git a/Cargo.toml b/Cargo.toml
index cf65e35..14d82b0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "simple-error"
-version = "0.3.0"
+version = "0.3.1"
 edition = "2021"
 rust-version = "1.58.0"
 license = "MIT/Apache-2.0"