diff --git a/src/index.d.ts b/src/index.d.ts
index a401390..3c2b804 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -46,8 +46,8 @@ type Options =
  * const klass = register(PreactComponent, 'my-component');
  * ```
  */
-export default function register(
-	Component: AnyComponent,
+export default function register<P = {}, S = {}>(
+	Component: AnyComponent<P, S>,
 	tagName?: string,
 	propNames?: string[],
 	options?: Options