diff --git a/CHANGELOG.md b/CHANGELOG.md
index 066618b..e0229f8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Nothing yet!
+### Fixed
+
+- Update TypeScript types ([#126](https://github.com/tailwindlabs/tailwindcss-forms/pull/126))
 
 ## [0.5.2] - 2022-05-18
 
diff --git a/src/index.d.ts b/src/index.d.ts
index e54342f..1918866 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -1,2 +1,7 @@
-declare function plugin(options?: { strategy?: 'base' | 'class' }): Function
+declare function plugin(options?: Partial<{ strategy: 'base' | 'class' }>): { handler: () => void }
+
+declare namespace plugin {
+  const __isOptionsFunction: true
+}
+
 export = plugin