diff --git a/packages/http-client/package-lock.json b/packages/http-client/package-lock.json
index d109c490..2a625161 100644
--- a/packages/http-client/package-lock.json
+++ b/packages/http-client/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@actions/http-client",
-  "version": "3.0.2",
+  "version": "4.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@actions/http-client",
-      "version": "3.0.2",
+      "version": "4.0.0",
       "license": "MIT",
       "dependencies": {
         "tunnel": "^0.0.6",
diff --git a/packages/http-client/package.json b/packages/http-client/package.json
index ab4c38c1..4f072966 100644
--- a/packages/http-client/package.json
+++ b/packages/http-client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@actions/http-client",
-  "version": "3.0.2",
+  "version": "4.0.0",
   "description": "Actions Http Client",
   "keywords": [
     "github",
@@ -9,8 +9,19 @@
   ],
   "homepage": "https://github.com/actions/toolkit/tree/main/packages/http-client",
   "license": "MIT",
+  "type": "module",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/index.d.ts",
+      "import": "./lib/index.js"
+    },
+    "./lib/auth": {
+      "types": "./lib/auth.d.ts",
+      "import": "./lib/auth.js"
+    }
+  },
   "directories": {
     "lib": "lib",
     "test": "__tests__"
diff --git a/packages/http-client/src/auth.ts b/packages/http-client/src/auth.ts
index 58938ac4..b856a310 100644
--- a/packages/http-client/src/auth.ts
+++ b/packages/http-client/src/auth.ts
@@ -1,6 +1,6 @@
 import * as http from 'http'
-import * as ifm from './interfaces'
-import {HttpClientResponse} from './index'
+import * as ifm from './interfaces.js'
+import {HttpClientResponse} from './index.js'
 
 export class BasicCredentialHandler implements ifm.RequestHandler {
   username: string
diff --git a/packages/http-client/src/index.ts b/packages/http-client/src/index.ts
index 2aee17dc..2f940949 100644
--- a/packages/http-client/src/index.ts
+++ b/packages/http-client/src/index.ts
@@ -2,9 +2,9 @@
 
 import * as http from 'http'
 import * as https from 'https'
-import * as ifm from './interfaces'
+import * as ifm from './interfaces.js'
 import * as net from 'net'
-import * as pm from './proxy'
+import * as pm from './proxy.js'
 import * as tunnel from 'tunnel'
 import {ProxyAgent} from 'undici'
 
diff --git a/packages/http-client/src/interfaces.ts b/packages/http-client/src/interfaces.ts
index 96b0fec7..e1ffcd39 100644
--- a/packages/http-client/src/interfaces.ts
+++ b/packages/http-client/src/interfaces.ts
@@ -1,6 +1,6 @@
 import * as http from 'http'
 import * as https from 'https'
-import {HttpClientResponse} from './index'
+import {HttpClientResponse} from './index.js'
 
 export interface HttpClient {
   options(
diff --git a/packages/http-client/tsconfig.json b/packages/http-client/tsconfig.json
index 222ca415..181e17db 100644
--- a/packages/http-client/tsconfig.json
+++ b/packages/http-client/tsconfig.json
@@ -3,7 +3,8 @@
   "compilerOptions": {
     "outDir": "./lib",
     "rootDir": "./src",
-    "moduleResolution": "node",
+    "module": "node16",
+    "moduleResolution": "node16",
     "declaration": true,
   },
   "include": [