diff --git a/templates/basic-js/index.js b/templates/basic-js/index.js
index bc42c8f9dd..33209b3633 100644
--- a/templates/basic-js/index.js
+++ b/templates/basic-js/index.js
@@ -2,7 +2,7 @@
  * This is the main entrypoint to your Probot app
  * @param {import('probot').Probot} app
  */
-module.exports = (app) => {
+export default (app) => {
   // Your code here
   app.log.info("Yay, the app was loaded!");
 
diff --git a/templates/basic-js/package.json b/templates/basic-js/package.json
index 7fa8c0920a..224f73b059 100644
--- a/templates/basic-js/package.json
+++ b/templates/basic-js/package.json
@@ -13,20 +13,17 @@
   ],
   "scripts": {
     "start": "probot run ./index.js",
-    "test": "jest"
+    "test": "node --test"
   },
   "dependencies": {
     "probot": "^13.0.1"
   },
   "devDependencies": {
-    "jest": "^29.0.0",
     "nock": "^14.0.0-beta.5",
     "smee-client": "^2.0.0"
   },
   "engines": {
     "node": ">= 18"
   },
-  "jest": {
-    "testEnvironment": "node"
-  }
+  "type": "module"
 }
diff --git a/templates/basic-js/test/index.test.js b/templates/basic-js/test/index.test.js
index 9c930200d3..a07ae4f433 100644
--- a/templates/basic-js/test/index.test.js
+++ b/templates/basic-js/test/index.test.js
@@ -1,18 +1,28 @@
-const nock = require("nock");
+import nock from "nock";
 // Requiring our app implementation
-const myProbotApp = require("..");
-const { Probot, ProbotOctokit } = require("probot");
+import myProbotApp from "../index.js";
+import { Probot, ProbotOctokit } from "probot";
 // Requiring our fixtures
-const payload = require("./fixtures/issues.opened");
+//import payload from "./fixtures/issues.opened.json" with { type: "json" };
 const issueCreatedBody = { body: "Thanks for opening this issue!" };
-const fs = require("fs");
-const path = require("path");
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+
+import { describe, beforeEach, afterEach, test } from "node:test";
+import assert from "node:assert";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
 const privateKey = fs.readFileSync(
   path.join(__dirname, "fixtures/mock-cert.pem"),
   "utf-8",
 );
 
+const payload = JSON.parse(
+  fs.readFileSync(path.join(__dirname, "fixtures/issues.opened.json"), "utf-8"),
+);
+
 describe("My Probot app", () => {
   let probot;
 
@@ -44,7 +54,7 @@ describe("My Probot app", () => {
 
       // Test that a comment is posted
       .post("/repos/hiimbex/testing-things/issues/1/comments", (body) => {
-        expect(body).toMatchObject(issueCreatedBody);
+        assert.deepEqual(body, issueCreatedBody);
         return true;
       })
       .reply(200);
@@ -52,7 +62,7 @@ describe("My Probot app", () => {
     // Receive a webhook event
     await probot.receive({ name: "issues", payload });
 
-    expect(mock.pendingMocks()).toStrictEqual([]);
+    assert.deepStrictEqual(mock.pendingMocks(), []);
   });
 
   afterEach(() => {
diff --git a/templates/basic-ts/jest.config.js b/templates/basic-ts/jest.config.js
deleted file mode 100755
index 9ee81b0f34..0000000000
--- a/templates/basic-ts/jest.config.js
+++ /dev/null
@@ -1,9 +0,0 @@
-module.exports = {
-  roots: ["<rootDir>/src/", "<rootDir>/test/"],
-  transform: {
-    "^.+\\.tsx?$": "ts-jest",
-  },
-  testRegex: "(/__tests__/.*|\\.(test|spec))\\.[tj]sx?$",
-  moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"],
-  testEnvironment: "node",
-};
diff --git a/templates/basic-ts/package.json b/templates/basic-ts/package.json
index 3d372f15f4..fd41804f57 100644
--- a/templates/basic-ts/package.json
+++ b/templates/basic-ts/package.json
@@ -14,21 +14,20 @@
   "scripts": {
     "build": "tsc",
     "start": "probot run ./lib/index.js",
-    "test": "jest"
+    "test": "vitest"
   },
   "dependencies": {
     "probot": "^13.0.1"
   },
   "devDependencies": {
-    "@types/jest": "^29.0.0",
     "@types/node": "^20.0.0",
-    "jest": "^29.0.0",
     "nock": "^14.0.0-beta.5",
     "smee-client": "^2.0.0",
-    "ts-jest": "^29.0.0",
+    "vitest": "^1.3.1",
     "typescript": "^5.3.3"
   },
   "engines": {
     "node": ">= 18"
-  }
+  },
+  "type": "module"
 }
diff --git a/templates/basic-ts/src/index.ts b/templates/basic-ts/src/index.ts
index 8eeafa1265..0a68622485 100644
--- a/templates/basic-ts/src/index.ts
+++ b/templates/basic-ts/src/index.ts
@@ -1,6 +1,6 @@
 import { Probot } from "probot";
 
-export = (app: Probot) => {
+export default (app: Probot) => {
   app.on("issues.opened", async (context) => {
     const issueComment = context.issue({
       body: "Thanks for opening this issue!",
diff --git a/templates/basic-ts/test/index.test.ts b/templates/basic-ts/test/index.test.ts
index b8326cb7b4..0eeaef19d6 100644
--- a/templates/basic-ts/test/index.test.ts
+++ b/templates/basic-ts/test/index.test.ts
@@ -3,19 +3,28 @@
 
 import nock from "nock";
 // Requiring our app implementation
-import myProbotApp from "../src";
+import myProbotApp from "../src/index.js";
 import { Probot, ProbotOctokit } from "probot";
 // Requiring our fixtures
-import payload from "./fixtures/issues.opened.json";
+//import payload from "./fixtures/issues.opened.json" with { "type": "json"};
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+import { describe, beforeEach, afterEach, test, expect } from "vitest";
+
 const issueCreatedBody = { body: "Thanks for opening this issue!" };
-const fs = require("fs");
-const path = require("path");
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
 const privateKey = fs.readFileSync(
   path.join(__dirname, "fixtures/mock-cert.pem"),
   "utf-8",
 );
 
+const payload = JSON.parse(
+  fs.readFileSync(path.join(__dirname, "fixtures/issues.opened.json"), "utf-8"),
+);
+
 describe("My Probot app", () => {
   let probot: any;
 
diff --git a/templates/basic-ts/tsconfig.json b/templates/basic-ts/tsconfig.json
index a39a6f5362..37aaa7c205 100755
--- a/templates/basic-ts/tsconfig.json
+++ b/templates/basic-ts/tsconfig.json
@@ -1,73 +1,24 @@
 {
   "compilerOptions": {
-    /* Basic Options */
-    "incremental": true /* Enable incremental compilation */,
-    "target": "es5" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */,
-    "module": "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
-    "lib": [
-      "es2015",
-      "es2017"
-    ] /* Specify library files to be included in the compilation. */,
-    "allowJs": true /* Allow javascript files to be compiled. */,
-    "checkJs": true /* Report errors in .js files. */,
-    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
-    "declaration": true /* Generates corresponding '.d.ts' file. */,
-    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
-    "sourceMap": true /* Generates corresponding '.map' file. */,
-    // "outFile": "./",                       /* Concatenate and emit output to single file. */
-    "outDir": "./lib" /* Redirect output structure to the directory. */,
-    // "rootDir": "./",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
-    // "composite": true,                     /* Enable project compilation */
-    // "tsBuildInfoFile": "./" /* Specify file to store incremental compilation information */,
-    // "removeComments": true,                /* Do not emit comments to output. */
-    // "noEmit": true,                        /* Do not emit outputs. */
-    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
-    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
-    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+    "incremental": true,
+    "target": "es2022",
+    "module": "Node16",
+    "declaration": true,
+    "sourceMap": true,
+    "outDir": "./lib",
 
     /* Strict Type-Checking Options */
-    "strict": true /* Enable all strict type-checking options. */,
-    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
-    // "strictNullChecks": true,              /* Enable strict null checks. */
-    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
-    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
-    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
-    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
-    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+    "strict": true,
 
     /* Additional Checks */
-    "noUnusedLocals": true /* Report errors on unused locals. */,
-    "noUnusedParameters": true /* Report errors on unused parameters. */,
-    "noImplicitReturns": true /* Report error when not all code paths in function return a value. */,
-    "noFallthroughCasesInSwitch": true /* Report errors for fallthrough cases in switch statement. */,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "noImplicitReturns": true,
+    "noFallthroughCasesInSwitch": true,
 
-    /* Module Resolution Options */
-    "moduleResolution": "node" /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */,
-    // "baseUrl": "./src" /* Base directory to resolve non-absolute module names. */,
-    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
-    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
-    // "typeRoots": [],                       /* List of folders to include type definitions from. */
-    // "types": [],                           /* Type declaration files to be included in compilation. */
-    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just type checking. */
-    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
-    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
-    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
-
-    /* Source Map Options */
-    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
-    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
-    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
-    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
-
-    /* Experimental Options */
-    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
-    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
-
-    /* Advanced Options */
-    "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */,
-    "resolveJsonModule": true,
-    "pretty": false,
-    "skipLibCheck": true
+    "moduleResolution": "Node16",
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true
   },
   "include": ["src/"],
   "compileOnSave": false
diff --git a/templates/basic-ts/vitest.config.ts b/templates/basic-ts/vitest.config.ts
new file mode 100644
index 0000000000..94cb752256
--- /dev/null
+++ b/templates/basic-ts/vitest.config.ts
@@ -0,0 +1,10 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    include: ["test/**/*.test.ts"],
+    coverage: {
+      provider: "v8",
+    },
+  },
+});
diff --git a/templates/checks-js/index.js b/templates/checks-js/index.js
index 9cc11abc75..9c075a9d89 100644
--- a/templates/checks-js/index.js
+++ b/templates/checks-js/index.js
@@ -5,7 +5,7 @@
  * This is the main entrypoint to your Probot app
  * @param {import('probot').Probot} app
  */
-module.exports = (app) => {
+export default (app) => {
   app.on(["check_suite.requested", "check_run.rerequested"], check);
 
   async function check(context) {
diff --git a/templates/checks-js/package.json b/templates/checks-js/package.json
index 7fa8c0920a..224f73b059 100644
--- a/templates/checks-js/package.json
+++ b/templates/checks-js/package.json
@@ -13,20 +13,17 @@
   ],
   "scripts": {
     "start": "probot run ./index.js",
-    "test": "jest"
+    "test": "node --test"
   },
   "dependencies": {
     "probot": "^13.0.1"
   },
   "devDependencies": {
-    "jest": "^29.0.0",
     "nock": "^14.0.0-beta.5",
     "smee-client": "^2.0.0"
   },
   "engines": {
     "node": ">= 18"
   },
-  "jest": {
-    "testEnvironment": "node"
-  }
+  "type": "module"
 }
diff --git a/templates/checks-js/test/index.test.js b/templates/checks-js/test/index.test.js
index d9bd956d98..f1c8c16d0a 100644
--- a/templates/checks-js/test/index.test.js
+++ b/templates/checks-js/test/index.test.js
@@ -1,21 +1,40 @@
-const nock = require("nock");
+import nock from "nock";
 // Requiring our app implementation
-const myProbotApp = require("..");
-const { Probot, ProbotOctokit } = require("probot");
+import myProbotApp from "../index.js";
+import { Probot, ProbotOctokit } from "probot";
 // Requiring our fixtures
-const checkSuitePayload = require("./fixtures/check_suite.requested");
-const checkRunSuccess = require("./fixtures/check_run.created");
-const fs = require("fs");
-const path = require("path");
+//import checkSuitePayload from "./fixtures/check_suite.requested" with { type: "json" };
+//import checkRunSuccess from "./fixtures/check_run.created" with { type: "json" };
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+
+import { describe, beforeEach, afterEach, test } from "node:test";
+import assert from "node:assert";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
 const privateKey = fs.readFileSync(
   path.join(__dirname, "fixtures/mock-cert.pem"),
   "utf-8",
 );
 
+const checkSuitePayload = JSON.parse(
+  fs.readFileSync(
+    path.join(__dirname, "fixtures/check_suite.requested.json"),
+    "utf-8",
+  ),
+);
+
+const checkRunSuccess = JSON.parse(
+  fs.readFileSync(
+    path.join(__dirname, "fixtures/check_run.created.json"),
+    "utf-8",
+  ),
+);
+
 describe("My Probot app", () => {
   let probot;
-  let mockCert;
 
   beforeEach(() => {
     nock.disableNetConnect();
@@ -45,7 +64,7 @@ describe("My Probot app", () => {
       .post("/repos/hiimbex/testing-things/check-runs", (body) => {
         body.started_at = "2018-10-05T17:35:21.594Z";
         body.completed_at = "2018-10-05T17:35:53.683Z";
-        expect(body).toMatchObject(checkRunSuccess);
+        assert.deepStrictEqual(body, checkRunSuccess);
         return true;
       })
       .reply(200);
@@ -53,7 +72,7 @@ describe("My Probot app", () => {
     // Receive a webhook event
     await probot.receive({ name: "check_suite", payload: checkSuitePayload });
 
-    expect(mock.pendingMocks()).toStrictEqual([]);
+    assert.deepStrictEqual(mock.pendingMocks(), []);
   });
 
   afterEach(() => {
diff --git a/templates/deploy-js/index.js b/templates/deploy-js/index.js
index dfdd33f7b5..9c7d556ee9 100644
--- a/templates/deploy-js/index.js
+++ b/templates/deploy-js/index.js
@@ -5,7 +5,7 @@
  * This is the main entrypoint to your Probot app
  * @param {import('probot').Probot} app
  */
-module.exports = (app) => {
+export default (app) => {
   // Your code here
   app.log.info("Yay, the app was loaded!");
   app.on(
diff --git a/templates/deploy-js/package.json b/templates/deploy-js/package.json
index 7fa8c0920a..224f73b059 100644
--- a/templates/deploy-js/package.json
+++ b/templates/deploy-js/package.json
@@ -13,20 +13,17 @@
   ],
   "scripts": {
     "start": "probot run ./index.js",
-    "test": "jest"
+    "test": "node --test"
   },
   "dependencies": {
     "probot": "^13.0.1"
   },
   "devDependencies": {
-    "jest": "^29.0.0",
     "nock": "^14.0.0-beta.5",
     "smee-client": "^2.0.0"
   },
   "engines": {
     "node": ">= 18"
   },
-  "jest": {
-    "testEnvironment": "node"
-  }
+  "type": "module"
 }
diff --git a/templates/deploy-js/test/index.test.js b/templates/deploy-js/test/index.test.js
index bfe5ab496b..9e7a25fa78 100644
--- a/templates/deploy-js/test/index.test.js
+++ b/templates/deploy-js/test/index.test.js
@@ -1,11 +1,23 @@
-const nock = require("nock");
+import nock from "nock";
 // Requiring our app implementation
-const myProbotApp = require("..");
-const { Probot, ProbotOctokit } = require("probot");
+import myProbotApp from "../index.js";
+import { Probot, ProbotOctokit } from "probot";
 // Requiring our fixtures
-const payload = require("./fixtures/pull_request.opened");
-const fs = require("fs");
-const path = require("path");
+//import payload from "./fixtures/pull_request.opened" with { type: "json" };
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+import { describe, beforeEach, afterEach, test } from "node:test";
+import assert from "node:assert";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+const payload = JSON.parse(
+  fs.readFileSync(
+    path.join(__dirname, "fixtures/pull_request.opened.json"),
+    "utf-8",
+  ),
+);
 
 const deployment = {
   ref: "hiimbex-patch-1",
@@ -66,7 +78,7 @@ describe("My Probot app", () => {
 
       // Test that a deployment is created
       .post("/repos/hiimbex/testing-things/deployments", (body) => {
-        expect(body).toMatchObject(deployment);
+        assert.deepStrictEqual(body, deployment);
         return true;
       })
       .reply(200, { id: 123 })
@@ -75,7 +87,7 @@ describe("My Probot app", () => {
       .post(
         "/repos/hiimbex/testing-things/deployments/123/statuses",
         (body) => {
-          expect(body).toMatchObject(deploymentStatus);
+          assert.deepStrictEqual(body, deploymentStatus);
           return true;
         },
       )
@@ -84,7 +96,7 @@ describe("My Probot app", () => {
     // Receive a webhook event
     await probot.receive({ name: "pull_request", payload });
 
-    expect(mock.pendingMocks()).toStrictEqual([]);
+    assert.deepStrictEqual(mock.pendingMocks(), []);
   });
 
   afterEach(() => {