diff --git a/lib/server.d.ts b/lib/server.d.ts
new file mode 100644
index 0000000..301d9db
--- /dev/null
+++ b/lib/server.d.ts
@@ -0,0 +1,67 @@
+/// <reference types="node" />
+
+import { EventEmitter } from 'events';
+
+type TurnDebugLevel =
+  | 'OFF'
+  | 'FATAL'
+  | 'ERROR'
+  | 'WARN'
+  | 'INFO'
+  | 'DEBUG'
+  | 'TRACE'
+  | 'ALL';
+
+type TurnAuthMech = 'none' | 'short-term' | 'long-term';
+
+interface TurnCredentials {
+  [user: string]: string;
+}
+
+interface TurnProps {
+  listeningPort: number;
+  listeningIps: string[];
+  relayIps: string[];
+  externalIps: string | { [localIp: string]: string } | null;
+  minPort: number;
+  maxPort: number;
+  authMech: TurnAuthMech;
+  realm: string;
+  maxAllocateLifetime: number;
+  defaultAllocatetLifetime: number;
+  debugLevel: TurnDebugLevel;
+
+  log: (...args: any[]) => void;
+  debug: (debugLevel: TurnDebugLevel, message: string) => void;
+}
+
+interface TurnOptions extends Partial<TurnProps> {
+  credentials?: TurnCredentials;
+}
+
+interface TurnServer extends Readonly<TurnProps> {}
+
+declare class TurnServer extends EventEmitter {
+  constructor(options?: TurnOptions);
+
+  start(): void;
+  stop(): void;
+  addUser(username: string, password: string): void;
+  removeUser(username: string): void;
+
+  readonly software: string;
+
+  readonly staticCredentials: TurnCredentials;
+}
+
+declare namespace TurnServer {
+  export {
+    TurnOptions,
+    TurnProps,
+    TurnCredentials,
+    TurnAuthMech,
+    TurnDebugLevel,
+  };
+}
+
+export = TurnServer;
diff --git a/package.json b/package.json
index 375dc11..0b2567a 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "0.0.6",
   "description": "STUN/TURN Server",
   "main": "./lib/server.js",
+  "types": "./lib/server.d.ts",
   "scripts": {
     "start": "node start",
     "test": "nyc karma start",
@@ -12,18 +13,18 @@
   "author": "Atlantis Software",
   "license": "MIT",
   "dependencies": {
-    "crc": "~3.8.0",
-    "js-yaml": "~3.14.0",
-    "log4js": "~6.3.0"
+    "crc": "~4.1.0",
+    "js-yaml": "~4.1.0",
+    "log4js": "~6.4.3"
   },
   "devDependencies": {
-    "coveralls": "~3.1.0",
-    "eslint": "~7.9.0",
-    "karma": "~5.2.2",
-    "karma-chrome-launcher": "~3.1.0",
+    "coveralls": "~3.1.1",
+    "eslint": "~8.11.0",
+    "karma": "~6.3.17",
+    "karma-chrome-launcher": "~3.1.1",
     "karma-mocha": "~2.0.1",
     "karma-mocha-reporter": "~2.2.5",
-    "mocha": "~8.1.3",
+    "mocha": "~9.2.2",
     "nyc": "~15.1.0"
   },
   "repository": {