diff --git a/CHANGELOG.md b/CHANGELOG.md
index eded2c0..14db1f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,13 +1,14 @@
-## 3.1.0 - unreleased
 
-ADDED:
+## 3.1.0 - 2023-08-19
 
 CHANGED:
 
-REMOVED:
+- Upgraded to PSR-11 v2.0.0
 
 FIXED:
 
+- [https://github.com/woohoolabs/zen/pull/16](Deprecation notices on PHP 8.2)
+
 ## 3.0.0 - 2021-06-07
 
 ADDED: