diff --git a/src/authkit-callback-route.ts b/src/authkit-callback-route.ts
index b43a517..d318459 100644
--- a/src/authkit-callback-route.ts
+++ b/src/authkit-callback-route.ts
@@ -19,7 +19,7 @@ export function authLoader(options: HandleAuthOptions = {}) {
 
     if (code) {
       try {
-        const { accessToken, refreshToken, user, impersonator, oauthTokens } =
+        const { accessToken, refreshToken, user, impersonator, oauthTokens, organizationId } =
           await getWorkOS().userManagement.authenticateWithCode({
             clientId: getConfig('clientId'),
             code,
@@ -67,6 +67,7 @@ export function authLoader(options: HandleAuthOptions = {}) {
             oauthTokens: oauthTokens ?? null,
             refreshToken,
             user,
+            organizationId: organizationId ?? null,
           });
         }
 
diff --git a/src/interfaces.ts b/src/interfaces.ts
index 3d5a3d5..1c4e919 100644
--- a/src/interfaces.ts
+++ b/src/interfaces.ts
@@ -23,6 +23,7 @@ export interface AuthLoaderSuccessData {
   oauthTokens: OauthTokens | null;
   refreshToken: string;
   user: User;
+  organizationId: string | null;
 }
 
 export interface RefreshErrorOptions {