From 274479758f5ae444dcd4e985e09b7d7ce984d54d Mon Sep 17 00:00:00 2001
From: Masaya Tojo <masaya@tojo.tokyo>
Date: Fri, 14 Jun 2024 10:51:01 +0900
Subject: Update README.md

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 8b71029..893f06e 100644
--- a/README.md
+++ b/README.md
@@ -13,6 +13,7 @@ $ chicken-install
 
 ## Supported Features
 
+- Semigroup
 - Monoid
 - Group
 - Foldable
-- 
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