diff --git a/types/heic-decode/heic-decode-tests.ts b/types/heic-decode/heic-decode-tests.ts
index 7f27b50dc5f608..9469c50f4056be 100644
--- a/types/heic-decode/heic-decode-tests.ts
+++ b/types/heic-decode/heic-decode-tests.ts
@@ -2,7 +2,23 @@ import decode = require("heic-decode");
 const { all } = decode;
 
 // $ExpectType Promise<DecodedImage>
-decode({ buffer: new ArrayBuffer(10) });
+decode({ buffer: new Uint8Array(10) });
+
+decode({ buffer: new Uint8Array(10) }).then((image) => {
+    // $ExpectType number
+    image.width;
+    // $ExpectType number
+    image.height;
+    const data: Uint8ClampedArray = image.data;
+    data;
+});
 
 // $ExpectType Promise<Decodable[]>
-all({ buffer: new ArrayBuffer(10) });
+all({ buffer: new Uint8Array(10) });
+
+all({ buffer: new Uint8Array(10) }).then((images) => {
+    images[0].decode().then((image) => {
+        const data: Uint8ClampedArray = image.data;
+        data;
+    });
+});
diff --git a/types/heic-decode/index.d.ts b/types/heic-decode/index.d.ts
index d3f2df61954e47..a18eb79887dabb 100644
--- a/types/heic-decode/index.d.ts
+++ b/types/heic-decode/index.d.ts
@@ -1,5 +1,5 @@
 interface HasBuffer {
-    buffer: ArrayBufferLike;
+    buffer: Uint8Array;
 }
 
 interface DecodedImage {
diff --git a/types/heic-decode/package.json b/types/heic-decode/package.json
index 1723cc9ecf0302..62507797eb3611 100644
--- a/types/heic-decode/package.json
+++ b/types/heic-decode/package.json
@@ -1,7 +1,7 @@
 {
     "private": true,
     "name": "@types/heic-decode",
-    "version": "1.1.9999",
+    "version": "2.0.9999",
     "projects": [
         "https://github.com/catdad-experiments/heic-decode"
     ],