diff --git a/src/auth-strategy.ts b/src/auth-strategy.ts
index ae3e511..9de0445 100644
--- a/src/auth-strategy.ts
+++ b/src/auth-strategy.ts
@@ -7,10 +7,10 @@ import {
   User,
   parseCookies,
 } from "payload";
-import { PluginTypes } from "./types";
+import { PluginOptions } from "./types";
 
 export const createAuthStrategy = (
-  pluginOptions: PluginTypes,
+  pluginOptions: PluginOptions,
   subFieldName: string,
 ): AuthStrategy => {
   const authStrategy: AuthStrategy = {
diff --git a/src/authorize-endpoint.ts b/src/authorize-endpoint.ts
index c283eb4..d215ab5 100644
--- a/src/authorize-endpoint.ts
+++ b/src/authorize-endpoint.ts
@@ -1,9 +1,9 @@
 import crypto from "crypto";
 import type { Endpoint } from "payload";
-import type { PluginTypes } from "./types";
+import type { PluginOptions } from "./types";
 
 export const createAuthorizeEndpoint = (
-  pluginOptions: PluginTypes,
+  pluginOptions: PluginOptions,
 ): Endpoint => ({
   method: "get",
   path: pluginOptions.authorizePath || "/oauth/authorize",
diff --git a/src/callback-endpoint.ts b/src/callback-endpoint.ts
index 209fa03..866de73 100644
--- a/src/callback-endpoint.ts
+++ b/src/callback-endpoint.ts
@@ -13,10 +13,10 @@ import type {
 } from "payload";
 import { generatePayloadCookie, getFieldsToSign } from "payload";
 import { defaultGetToken } from "./default-get-token";
-import type { PluginTypes } from "./types";
+import type { PluginOptions } from "./types";
 
 export const createCallbackEndpoint = (
-  pluginOptions: PluginTypes,
+  pluginOptions: PluginOptions,
 ): Endpoint[] => {
   const handler: PayloadHandler = async (req: PayloadRequest) => {
     try {
@@ -48,7 +48,8 @@ export const createCallbackEndpoint = (
       // /////////////////////////////////////
       // shorthands
       // /////////////////////////////////////
-      const subFieldName = pluginOptions.subFieldName || "sub";
+      const subFieldName =
+        pluginOptions.subField?.name || pluginOptions.subFieldName || "sub";
       const authCollection = (pluginOptions.authCollection ||
         "users") as CollectionSlug;
       const collectionConfig = req.payload.collections[authCollection].config;
diff --git a/src/index.ts b/src/index.ts
index 4737969..611bd25 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,3 +1,3 @@
 export { defaultGetToken } from "./default-get-token";
 export { OAuth2Plugin } from "./plugin";
-export type { PluginTypes } from "./types";
+export type { PluginOptions as PluginTypes } from "./types";
diff --git a/src/modify-auth-collection.ts b/src/modify-auth-collection.ts
index ba04f61..9fe0eae 100644
--- a/src/modify-auth-collection.ts
+++ b/src/modify-auth-collection.ts
@@ -2,10 +2,10 @@ import { AuthStrategy, type CollectionConfig } from "payload";
 import { createAuthStrategy } from "./auth-strategy";
 import { createAuthorizeEndpoint } from "./authorize-endpoint";
 import { createCallbackEndpoint } from "./callback-endpoint";
-import { PluginTypes } from "./types";
+import { PluginOptions } from "./types";
 
 export const modifyAuthCollection = (
-  pluginOptions: PluginTypes,
+  pluginOptions: PluginOptions,
   existingCollectionConfig: CollectionConfig,
   subFieldName: string,
 ): CollectionConfig => {
diff --git a/src/plugin.ts b/src/plugin.ts
index f7c68ed..ef04ea8 100644
--- a/src/plugin.ts
+++ b/src/plugin.ts
@@ -1,9 +1,9 @@
 import type { Plugin } from "payload";
 import { modifyAuthCollection } from "./modify-auth-collection";
-import type { PluginTypes } from "./types";
+import type { PluginOptions } from "./types";
 
 export const OAuth2Plugin =
-  (pluginOptions: PluginTypes): Plugin =>
+  (pluginOptions: PluginOptions): Plugin =>
   (incomingConfig) => {
     let config = { ...incomingConfig };
 
@@ -15,7 +15,8 @@ export const OAuth2Plugin =
     // Modify auth collection
     // /////////////////////////////////////
     const authCollectionSlug = pluginOptions.authCollection || "users";
-    const subFieldName = pluginOptions.subFieldName || "sub";
+    const subFieldName =
+      pluginOptions.subField?.name || pluginOptions.subFieldName || "sub";
     const authCollection = config.collections?.find(
       (collection) => collection.slug === authCollectionSlug,
     );
diff --git a/src/types.ts b/src/types.ts
index 487a90a..63af8ee 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,6 +1,6 @@
-import type { PayloadRequest } from "payload";
+import type { PayloadRequest, TextField } from "payload";
 
-export interface PluginTypes {
+export interface PluginOptions {
   /**
    * Enable or disable plugin
    * @default false
@@ -64,6 +64,12 @@ export interface PluginTypes {
    */
   subFieldName?: string;
 
+  /**
+   * Customize your own sub field to store the OAuth provider's user ID.
+   * Overrides `subFieldName` if both are provided.
+   */
+  subField?: TextField;
+
   /**
    * Client ID for the OAuth provider
    */