diff --git a/package.json b/package.json
index 80f90cc..de4e60f 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
   },
   "license": "Apache-2.0",
   "main": "./index",
+  "typings": "./types/index.d.ts",
   "repository": {
     "type": "git",
     "url": "https://github.com/openstf/adbkit-apkreader.git"
diff --git a/types/index.d.ts b/types/index.d.ts
new file mode 100644
index 0000000..f0d53f1
--- /dev/null
+++ b/types/index.d.ts
@@ -0,0 +1,149 @@
+// Type definitions for adbkit-apkreader 3.1.0
+/// <reference types='node' />
+
+import fs = require('fs');
+
+type activity = {
+  name: string,
+  label?: string|undefined,
+  theme?: string|undefined,
+  configChanges?: number|undefined,
+  screenOrientation?: number|undefined,
+  launchMode?: number|undefined,
+  windowSoftInputMode?: number|undefined,
+  hardwareAccelerated?: boolean|undefined,
+  exported?: boolean|undefined,
+  excludeFromRecents?: boolean|undefined,
+  intentFilters?: Array<{
+    actions: {name: string},
+    categories: {name: string},
+    data: Array<any>,
+    [key: string]: any,
+  }>|undefined,
+  metaData?: Array<{
+    name: string,
+    value: boolean,
+  }>|undefined,
+  [key: string]: any,
+}
+
+type manifest = {
+  versionCode: number,
+  versionName: string,
+  compileSdkVersion?: number|undefined,
+  compileSdkVersionCodename?: string|undefined,
+  installLocation?: number|undefined,
+  package: string,
+  platformBuildVersionCode?: number|undefined,
+  platformBuildVersionName?: string|undefined,
+  usesPermissions: Array<{name: string, maxSdkVersion?: number|undefined}>,
+  permissions: Array<{name: string, protectionLevel: number}>,
+  permissionTrees: Array<any>,
+  permissionGroups: Array<any>,
+  instrumentation: any|null,
+  usesSdk: { minSdkVersion: number, targetSdkVersion: number },
+  usesConfiguration: any|null,
+  usesFeatures: Array<{name?: string|undefined, required?: boolean|undefined, glEsVersion?: number|undefined}>,
+  supportsScreens: {
+    anyDensity?: boolean|undefined,
+    smallScreens?: boolean|undefined,
+    normalScreens?: boolean|undefined,
+    largeScreens?: boolean|undefined,
+    xlargeScreens?: boolean|undefined,
+    [key: string]: boolean|undefined,
+  } | null,
+  compatibleScreens: Array<{ screenSize: number, screenDensity: number }>,
+  supportsGlTextures: Array<any>,
+  application: {
+    theme?: string|undefined,
+    label?: string|undefined,
+    icon?: string|undefined,
+    roundIcon?: string|undefined,
+    name?: string|undefined,
+    banner?: string|undefined,
+    screenOrientation?: number|undefined,
+    debuggable?: boolean|undefined,
+    allowBackup?: boolean|undefined,
+    usesCleartextTraffic?: boolean|undefined,
+    supportsRtl?: boolean|undefined,
+    isGame?: boolean|undefined,
+    activities: activity[],
+    activityAliases: Array<any>,
+    launcherActivities: activity[],
+    services: Array<{
+      name: string,
+      enabled?: boolean|string|undefined,
+      exported?: boolean|undefined,
+      permission?: string|undefined,
+      intentFilters?: Array<{
+        actions: {name: string},
+        categories: {name: string},
+        data: Array<any>,
+        [key: string]: any,
+      }>|undefined,
+      metaData?: Array<any>,
+      [key: string]: any,
+    }>|undefined,
+    receivers: Array<{
+      name: string,
+      enabled?: boolean|string|undefined,
+      exported?: boolean|undefined,
+      permission?: string|undefined,
+      intentFilters?: Array<{
+        actions: {name: string},
+        categories: {name: string},
+        data: Array<any>,
+        [key: string]: any,
+      }>|undefined,
+      metaData?: Array<any>,
+      [key: string]: any,
+    }>|undefined,
+    providers: Array<{
+      name: string,
+      enabled?: boolean|string|undefined,
+      exported?: boolean|undefined,
+      authorities?: string|undefined,
+      initOrder?: number|undefined,
+      grantUriPermissions?: Array<any>|undefined,
+      metaData?: Array<any>|undefined,
+      pathPermissions?: Array<any>|undefined,
+      [key: string]: any,
+    }>,
+    usesLibraries: Array<{ name: string, required: boolean }>,
+    [key: string]: any,
+  },
+}
+
+type attribute = {
+  namespaceURI: string|null,
+  nodeType: number,
+  nodeName: string,
+  name: string,
+  value: string|null,
+  typedValue: {
+    valeu: string|number,
+    type: string,
+    rawType: number,
+  }
+}
+
+type xmlNode = {
+  namespaceURI: string|null,
+  nodeType: number,
+  nodeName: string,
+  attributes: Array<attribute>,
+  childNodes: Array<xmlNode>,
+}
+
+
+declare class ApkReader {
+  public static MANIFEST(): 'AndroidManifest.xml';
+  public static open(apk: string): Promise<ApkReader>;
+
+  public readContent(path: string): Promise<Buffer>;
+  public readManifest(options?: {debug: boolean}): Promise<manifest>;
+  public readXml(path: string, options?: {debug: boolean}): Promise<xmlNode>;
+  public usingFileStream<T>(path: string, action: (stream: fs.ReadStream) => Promise<T> ): Promise<T>;
+}
+
+export = ApkReader;
\ No newline at end of file