diff --git a/CHANGELOG.md b/CHANGELOG.md
index ddee710..df6803b 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,9 +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](https://semver.org/spec/v2.0.0.html).
 
-## [TODO]
+## [1.0.0] - 2023-06-13
 
-- update reference to only-seven-days mod
+- remove reference to only-seven-days mod
+- update to a21 mod-info file format
 
 ## [0.4.0] - 2023-04-14
 
diff --git a/ModInfo.xml b/ModInfo.xml
index c029d13..650fd7c 100755
--- a/ModInfo.xml
+++ b/ModInfo.xml
@@ -1,9 +1,8 @@
 <xml>
-    <ModInfo>
-        <Name value="Days of the Week" />
-        <Description value="Replace days count in UI with a day of the week." />
-        <Author value="Jonathan Robertson (Kanaverum)" />
-        <Version value="0.4.0" />
-        <Website value="https://github.com/jonathan-robertson/days-of-the-week" />
-    </ModInfo>
+    <Name value="kanaverum-days-of-the-week" />
+    <DisplayName value="Days of the Week" />
+    <Version value="1.0.0" />
+    <Description value="Replace days count in UI with a day of the week." />
+    <Author value="Jonathan Robertson (Kanaverum)" />
+    <Website value="https://github.com/jonathan-robertson/days-of-the-week" />
 </xml>
\ No newline at end of file
diff --git a/README.md b/README.md
index 0f04f1e..c5d7d24 100755
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Days of the Week
 
-[![🧪 Tested On](https://img.shields.io/badge/🧪%20Tested%20On-A20.6%20b9-blue.svg)](https://7daystodie.com/) [![📦 Automated Release](https://github.com/jonathan-robertson/days-of-the-week/actions/workflows/release.yml/badge.svg)](https://github.com/jonathan-robertson/days-of-the-week/actions/workflows/release.yml)
+[![🧪 Tested On](https://img.shields.io/badge/🧪%20Tested%20On-A21%20b313-blue.svg)](https://7daystodie.com/) [![📦 Automated Release](https://github.com/jonathan-robertson/days-of-the-week/actions/workflows/release.yml/badge.svg)](https://github.com/jonathan-robertson/days-of-the-week/actions/workflows/release.yml)
 
 - [Days of the Week](#days-of-the-week)
   - [Summary](#summary)
@@ -71,9 +71,8 @@ As a bonus, I've included short days as well - in case you're shooting for a mor
 
 ## Sister Projects
 
-This mod is designed to work well with a few others if you're using a dedicated server:
+This mod is designed to work well with another if you're using a dedicated server:
 
-- [Only Seven Days](https://github.com/jonathan-robertson/only-seven-days)
 - [Days Remaining](https://github.com/jonathan-robertson/days-remaining)
 
 ## Compatibility