diff --git a/.github/workflows/firestore-ios.yml b/.github/workflows/firestore-ios.yml
index 9d03ec2..a4b63ad 100644
--- a/.github/workflows/firestore-ios.yml
+++ b/.github/workflows/firestore-ios.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: macOS-latest
     strategy:
         matrix:
-          destination: ['platform=iOS Simulator,OS=13.5,name=iPhone 11']
+          destination: ['platform=iOS Simulator,OS=latest,name=iPhone 11']
     steps:
       - name: Checkout
         uses: actions/checkout@master
diff --git a/firestore/ios/firestore-snippets-cpp/AppDelegate.mm b/firestore/ios/firestore-snippets-cpp/AppDelegate.mm
index b049fbc..3a61ab5 100644
--- a/firestore/ios/firestore-snippets-cpp/AppDelegate.mm
+++ b/firestore/ios/firestore-snippets-cpp/AppDelegate.mm
@@ -17,6 +17,10 @@
 #import "AppDelegate.h"
 #import <Firebase/Firebase.h>
 #include "firebase/app.h"
+#include "firebase/firestore.h"
+
+using firebase::App;
+using firebase::firestore::Firestore;
 
 @interface AppDelegate ()
 
@@ -24,10 +28,14 @@ @interface AppDelegate ()
 
 @implementation AppDelegate
 
-
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
   [FIRApp configure];
-  firebase::App::Create();
+  // [START get_firestore_instance]
+  // Make sure the call to `Create()` happens some time before you call Firestore::GetInstance().
+  App::Create();
+  Firestore* db = Firestore::GetInstance();
+  // [END get_firestore_instance]
+  (void)db; // suppress unused variable warning
   return YES;
 }