Update changelog for new "types" field in package.json

EvanHahn · EvanHahn · commit 62b2c64fe334 · 2021-04-21T20:33:59.000-05:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## Unreleased
+
+### Added
+
+- Explicitly define TypeScript types in `package.json`. See [#303](https://github.com/helmetjs/helmet/pull/303)
+
 ## 4.5.0 - 2021-04-17
 
 ### Added
