diff --git a/‎__tests__/main.test.ts‎
Lines changed: 7 additions & 9 deletions b/‎__tests__/main.test.ts‎
Lines changed: 7 additions & 9 deletions
diff --git a/‎dist/main.js‎
Lines changed: 14 additions & 14 deletions b/‎dist/main.js‎
Lines changed: 14 additions & 14 deletions
diff --git a/‎src/run.ts‎
Lines changed: 4 additions & 4 deletions b/‎src/run.ts‎
Lines changed: 4 additions & 4 deletions
@@ -15,8 +15,8 @@ const {
   mockGetOctokit,
   mockContext,
   mockFg,
-  mockReadFileSync,
-  mockStatSync,
+  mockReadFile,
+  mockStat,
   mockMimeLookup,
 } = vi.hoisted(() => {
   const mockGetReleaseByTag = vi.fn();
@@ -52,8 +52,8 @@ const {
       payload: { release: { id: 99 } },
     },
     mockFg: vi.fn(),
-    mockReadFileSync: vi.fn(() => Buffer.from("file-content")),
-    mockStatSync: vi.fn(() => ({ size: 12 })),
+    mockReadFile: vi.fn(() => Promise.resolve(Buffer.from("file-content"))),
+    mockStat: vi.fn(() => Promise.resolve({ size: 12 })),
     mockMimeLookup: vi.fn(() => "text/plain"),
   };
 });
@@ -71,11 +71,9 @@ vi.mock("@actions/github", () => ({
 
 vi.mock("fast-glob", () => ({ default: mockFg }));
 
-vi.mock("fs", () => ({
-  default: {
-    readFileSync: mockReadFileSync,
-    statSync: mockStatSync,
-  },
+vi.mock("fs/promises", () => ({
+  readFile: mockReadFile,
+  stat: mockStat,
 }));
 
 vi.mock("mime-types", () => ({
 
@@ -1,7 +1,7 @@
 import { getInput, setFailed, debug } from "@actions/core";
 import { context, getOctokit } from "@actions/github";
 import fg from "fast-glob";
-import fs from "fs";
+import { readFile, stat } from "fs/promises";
 import path from "path";
 import mime from "mime-types";
 
@@ -89,15 +89,15 @@ export async function run() {
         });
       }
 
-      const fileStream = fs.readFileSync(file);
+      const fileStream = await readFile(file);
       const contentType = mime.lookup(file) || "application/zip";
 
       console.log(`Uploading ${file}...`);
       debug(`Content-Type = '${contentType}'`);
 
       const headers = {
         "content-type": contentType,
-        "content-length": fs.statSync(file).size,
+        "content-length": (await stat(file)).size,
       };
 
       await octokit.rest.repos.uploadReleaseAsset({
@@ -106,7 +106,7 @@ export async function run() {
         release_id: release_id,
         headers,
         name: fileName,
-        // Octokits typings only accept string, but the code also accepts Buffer, so this tricks Typescript into allowing the buffer
+        // Octokits typings only accept string, but the code also accepts Buffer, so this tricks TypeScript into allowing the buffer
         data: fileStream as unknown as string,
       });
     }