update change log

chloerice · chloerice · commit 603367c0b15c · 2020-04-23T11:06:45.000-04:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -8,6 +8,12 @@ The format is based on [these versioning and changelog guidelines](https://git.i
 
 ---
 
+## 4.20.1 - 2020-04-23
+
+### Bug fixes
+
+- Fixed performance of `ResourceItem` due to inclusion of `children` in deep prop comparison within `shouldComponentUpdate` ([#2936](https://github.com/Shopify/polaris-react/pull/2936))
+
 ## 4.20.0 - 2020-04-22
 
 ### Enhancements
diff --git a/UNRELEASED.md b/UNRELEASED.md
@@ -8,8 +8,6 @@
 
 ### Bug fixes
 
-- Fixed performance of `ResourceItem` due to inclusion of `children` in deep prop comparison within `shouldComponentUpdate` ([#2936](https://github.com/Shopify/polaris-react/pull/2936))
-
 ### Documentation
 
 ### Development workflow
