From 1ab2da12b139019e82075e31aaa881c10cfd756e Mon Sep 17 00:00:00 2001
From: Marco Perone <pasafama@gmail.com>
Date: Tue, 1 Oct 2024 16:58:49 +0200
Subject: [PATCH] update changelog

---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5055402..90f89b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ 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](http://semver.org/).
 
+## [3.1.2]
+
+- fix `CostantSemigroup` types, for compatibility with `Semigroup` interface
+
 ## [3.1.1]
 
 - add type hints to `OppositeSemigroup` and `OppositeMonoid`