diff --git a/dist/index.js b/dist/index.js
index f782923..fa3e82e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -29,6 +29,9 @@ var __importStar = (this && this.__importStar) || function (mod) {
     __setModuleDefault(result, mod);
     return result;
 };
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
 Object.defineProperty(exports, "__esModule", ({ value: true }));
 exports.getAssetName = exports.getRepo = exports.CarvelReleasesService = void 0;
 const gha_installer_1 = __nccwpck_require__(631);
@@ -36,6 +39,7 @@ const crypto = __importStar(__nccwpck_require__(6113));
 const path = __importStar(__nccwpck_require__(1017));
 const fs = __importStar(__nccwpck_require__(7147));
 const core = __importStar(__nccwpck_require__(2186));
+const os_1 = __importDefault(__nccwpck_require__(2037));
 class CarvelReleasesService extends gha_installer_1.GitHubReleasesService {
     constructor(core, env, fs, octokit) {
         super(core, env, octokit, { repo: getRepo, assetName: getAssetName });
@@ -84,13 +88,18 @@ function getAssetName(platform, app) {
 }
 exports.getAssetName = getAssetName;
 function getAssetSuffix(platform) {
-    switch (platform) {
-        case 'win32':
+    const arch = os_1.default.arch();
+    switch (`${platform}-${arch}`) {
+        case 'win32-x64':
             return 'windows-amd64.exe';
-        case 'darwin':
+        case 'darwin-x64':
             return 'darwin-amd64';
-        default:
+        case 'linux-x64':
             return 'linux-amd64';
+        case 'linux-arm64':
+            return 'linux-arm64';
+        default:
+            throw new Error(`Unsupported platform-arch combination: ${platform}-${arch}`);
     }
 }
 
diff --git a/src/carvel_releases_service.ts b/src/carvel_releases_service.ts
index c6cf7a4..8548056 100644
--- a/src/carvel_releases_service.ts
+++ b/src/carvel_releases_service.ts
@@ -15,6 +15,7 @@ import * as crypto from 'crypto'
 import * as path from 'path'
 import * as fs from 'fs'
 import * as core from '@actions/core'
+import os from 'os';
 
 export class CarvelReleasesService extends GitHubReleasesService {
   private _fs: FileSystem
@@ -85,12 +86,17 @@ export function getAssetName(platform: string, app: AppInfo): string {
 }
 
 function getAssetSuffix(platform: string): string {
-  switch (platform) {
-    case 'win32':
+  const arch = os.arch()
+  switch (`${platform}-${arch}`) {
+    case 'win32-x64':
       return 'windows-amd64.exe'
-    case 'darwin':
+    case 'darwin-x64':
       return 'darwin-amd64'
-    default:
+    case 'linux-x64':
       return 'linux-amd64'
+    case 'linux-arm64':
+      return 'linux-arm64'
+    default:
+      throw new Error(`Unsupported platform-arch combination: ${platform}-${arch}`)
   }
 }