diff --git a/README.md b/README.md
index 1eccb45..01046fb 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ Import the `Omnivore` class and create a new instance with your **API Key** and
 import { Omnivore } from '@omnivore-app/api'
 
 const omnivore = new Omnivore({
-  authToken: 'your api key',
+  apiKey: 'your api key',
   baseUrl: 'https://api-prod.omnivore.app',
 })
 
@@ -175,7 +175,7 @@ The `Omnivore` class accepts an options object with the following properties:
 
 | Option      | Default value                     | Type     | Description                                                                          |
 | ----------- | --------------------------------- | -------- | ------------------------------------------------------------------------------------ |
-| `authToken` | `undefined`                       | `string` | API key required for authentication.                                                 |
+| `apiKey`    | `undefined`                       | `string` | API key required for authentication.                                                 |
 | `baseUrl`   | `"https://api-prod.omnivore.app"` | `string` | The base URL for sending API requests. This can be changed to a local-hosted server. |
 | `timeoutMs` | `0`                               | `number` | Number of milliseconds to wait before timeout.                                       |
 
diff --git a/package.json b/package.json
index 808d0a6..3df3845 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@omnivore-app/api",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "Omnivore API Client Library for Node.js",
   "main": "./dist/src/index.js",
   "types": "./dist/src/index.d.ts",
diff --git a/src/client.ts b/src/client.ts
index 4cc4c5f..5fd5b5a 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -8,7 +8,7 @@ import {
 } from './graphql'
 
 export interface ClientOptions {
-  authToken: string
+  apiKey: string
   baseUrl?: string
   timeoutMs?: number
 }
@@ -98,6 +98,8 @@ export interface SearchItemResponse {
 
 export interface ItemUpdatesParameters {
   since: string
+  after?: number
+  first?: number
 }
 
 export type ItemUpdateReason = 'CREATED' | 'UPDATED' | 'DELETED'
@@ -153,7 +155,7 @@ export class Omnivore {
       exchanges: [fetchExchange],
       fetchOptions: () => ({
         headers: {
-          Authorization: clientOptions.authToken,
+          Authorization: clientOptions.apiKey,
         },
         timeout: clientOptions.timeoutMs || 0,
       }),
@@ -188,7 +190,10 @@ export class Omnivore {
       params: ItemUpdatesParameters,
     ): Promise<ItemUpdatesResponse> => {
       const { data, error } = await this.client
-        .query(UpdatesSinceQuery, params)
+        .query(UpdatesSinceQuery, {
+          ...params,
+          after: params.after ? String(params.after) : undefined,
+        })
         .toPromise()
 
       const updatesSince = data?.updatesSince
diff --git a/src/graphql.ts b/src/graphql.ts
index cd2a6b8..70778d0 100644
--- a/src/graphql.ts
+++ b/src/graphql.ts
@@ -128,8 +128,8 @@ export const SearchQuery = graphql(
 
 export const UpdatesSinceQuery = graphql(
   `
-    query UpdatesSince($since: Date!) {
-      updatesSince(since: $since) {
+    query UpdatesSince($after: String, $first: Int, $since: Date!) {
+      updatesSince(after: $after, first: $first, since: $since) {
         __typename
         ... on UpdatesSinceSuccess {
           edges {
diff --git a/src/index.ts b/src/index.ts
index a1327d1..cdd3d43 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -7,6 +7,7 @@ export {
   ItemFormat,
   ItemType,
   ItemUpdateReason,
+  ItemUpdatesParameters,
   ItemUpdatesResponse,
   Label,
   LibraryItemState,