diff --git a/types/debounce/debounce-tests.ts b/types/debounce/debounce-tests.ts
index 4acff7c446..5f0463a4c1 100644
--- a/types/debounce/debounce-tests.ts
+++ b/types/debounce/debounce-tests.ts
@@ -14,6 +14,9 @@ const imm1: number = (debounce((x: number) => x * 2, 100, true))(2);
 const clearable = debounce(doThings);
 clearable.clear();
 
+const flushable = debounce(doThings);
+flushable.flush();
+
 // Intentionally asserts that the member variable has all the same benefits as the direct export.
 // Eventually, if debounce stop supporting the CommonJS-only module calling (`require("debounce")(...)`),
 // we can remove this and change the top import&require to `import { debounce } from "debounce";`.
diff --git a/types/debounce/index.d.ts b/types/debounce/index.d.ts
index fa244351d6..e561cb51fe 100644
--- a/types/debounce/index.d.ts
+++ b/types/debounce/index.d.ts
@@ -1,13 +1,15 @@
-// Type definitions for debounce 3.0
+// Type definitions for debounce 1.2
 // Project: https://github.com/component/debounce
 // Definitions by: Denis Sokolov <https://github.com/denis-sokolov>
 //                 Josh Goldberg <https://github.com/joshuakgoldberg>
+//                 Wayne Carson <https://github.com/wcarson>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare namespace _debounce {
     const debounce: typeof _debounce;
 }
 
-declare function _debounce<A extends Function>(f: A, interval?: number, immediate?: boolean): A & { clear(): void; };
+declare function _debounce<A extends Function>(f: A, interval?: number, immediate?: boolean): A & { clear(): void; }
+    & { flush(): void };
 
 export = _debounce;