diff --git a/.gitignore b/.gitignore
index 239ecff..84e2ef1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 node_modules
 yarn.lock
+.vscode
diff --git a/index.d.ts b/index.d.ts
index 7c70057..8e0c9ef 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -163,7 +163,7 @@ declare class PCancelable<ValueType> extends Promise<ValueType> {
 
 	@param reason - The cancellation reason to reject the promise with.
 	*/
-	cancel(reason?: string): void;
+	cancel: (reason?: string) => void;
 
 	/**
 	Rejection reason when `.cancel()` is called.