diff --git a/Objective-C/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.m b/Objective-C/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.m
index 7f024ecb..a74ba5d1 100644
--- a/Objective-C/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.m
+++ b/Objective-C/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.m
@@ -143,7 +143,7 @@ - (void)startNewGame {
 
 - (void)loadInterstitial {
   GAMRequest *request = [GAMRequest request];
-  [GAMInterstitialAd loadWithAdManagerAdUnitID:@"/6499/example/interstitial"
+  [GAMInterstitialAd loadWithAdManagerAdUnitID:@"/21775744923/example/interstitial"
                                        request:request
                              completionHandler:^(GAMInterstitialAd *ad, NSError *error) {
                                if (error) {
diff --git a/Swift/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.swift b/Swift/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.swift
index 8c0b89e1..f92052e9 100644
--- a/Swift/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.swift
+++ b/Swift/admanager/AdManagerInterstitialExample/AdManagerInterstitialExample/ViewController.swift
@@ -173,7 +173,7 @@ class ViewController: UIViewController, GADFullScreenContentDelegate {
   fileprivate func loadInterstitial() async {
     do {
       interstitial = try await GAMInterstitialAd.load(
-        withAdManagerAdUnitID: "/6499/example/interstitial", request: GAMRequest())
+        withAdManagerAdUnitID: "/21775744923/example/interstitial", request: GAMRequest())
       interstitial?.fullScreenContentDelegate = self
     } catch {
       print("Failed to load interstitial ad with error: \(error.localizedDescription)")