diff --git a/RNTester/RCTTest/RCTTestRunner.m b/RNTester/RCTTest/RCTTestRunner.m
index 74ae98d61..3e530a5e1 100644
--- a/RNTester/RCTTest/RCTTestRunner.m
+++ b/RNTester/RCTTest/RCTTestRunner.m
@@ -87,7 +87,11 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
 - (NSURL *)defaultScriptURL
 {
   if (getenv("CI_USE_PACKAGER") || _useBundler) {
-    return [NSURL URLWithString:[NSString stringWithFormat:@"http://localhost:8081/%@.bundle?platform=ios&dev=true", _appPath]];
+    NSString *bundlePrefix = @"";
+    if (getenv("CI_USE_BUNDLE_PREFIX")) {
+      bundlePrefix = @"react-native-github/";
+    }
+    return [NSURL URLWithString:[NSString stringWithFormat:@"http://localhost:8081/%@%@.bundle?platform=ios&dev=true", bundlePrefix, _appPath]];
   } else {
     return [[NSBundle bundleForClass:[RCTBridge class]] URLForResource:@"main" withExtension:@"jsbundle"];
   }
diff --git a/RNTester/RNTester.xcodeproj/xcshareddata/xcschemes/RNTester.xcscheme b/RNTester/RNTester.xcodeproj/xcshareddata/xcschemes/RNTester.xcscheme
index b3d01b135..4f65fc298 100644
--- a/RNTester/RNTester.xcodeproj/xcshareddata/xcschemes/RNTester.xcscheme
+++ b/RNTester/RNTester.xcodeproj/xcshareddata/xcschemes/RNTester.xcscheme
@@ -143,6 +143,11 @@
             value = "1"
             isEnabled = "YES">
          </EnvironmentVariable>
+         <EnvironmentVariable
+            key = "CI_USE_BUNDLE_PREFIX"
+            value = "0"
+            isEnabled = "YES">
+         </EnvironmentVariable>
       </EnvironmentVariables>
       <AdditionalOptions>
       </AdditionalOptions>
diff --git a/RNTester/RNTester/AppDelegate.mm b/RNTester/RNTester/AppDelegate.mm
index 94c5933ef..4e11db008 100644
--- a/RNTester/RNTester/AppDelegate.mm
+++ b/RNTester/RNTester/AppDelegate.mm
@@ -67,21 +67,21 @@
 
   _bridge = [[RCTBridge alloc] initWithDelegate:self
                                   launchOptions:launchOptions];
-  
+
   // Appetizer.io params check
   NSDictionary *initProps = @{};
   NSString *_routeUri = [[NSUserDefaults standardUserDefaults] stringForKey:@"route"];
   if (_routeUri) {
     initProps = @{@"exampleFromAppetizeParams": [NSString stringWithFormat:@"rntester://example/%@Example", _routeUri]};
   }
-  
+
 #ifdef RN_FABRIC_ENABLED
   // FIXME: remove when resolved https://github.com/facebook/react-native/issues/23910
   [[NSNotificationCenter defaultCenter] addObserver:self
                                            selector:@selector(handleJavaScriptDidLoadNotification:)
                                                name:RCTJavaScriptDidLoadNotification
                                              object:_bridge];
-  
+
   _surfacePresenter = [[RCTSurfacePresenter alloc] initWithBridge:_bridge config:nil];
   _bridge.surfacePresenter = _surfacePresenter;
 
@@ -89,7 +89,7 @@
 #else
   UIView *rootView = [[RCTRootView alloc] initWithBridge:_bridge moduleName:@"RNTesterApp" initialProperties:initProps];
 #endif
-  
+
   self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
   UIViewController *rootViewController = [UIViewController new];
   rootViewController.view = rootView;
@@ -109,7 +109,12 @@
 
 - (NSURL *)sourceURLForBridge:(__unused RCTBridge *)bridge
 {
-  return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:@"RNTester/js/RNTesterApp.ios"
+  NSString *bundlePrefix = @"";
+  if (getenv("CI_USE_BUNDLE_PREFIX")) {
+    bundlePrefix = @"react-native-github/";
+  }
+  NSString *bundleRoot = [NSString stringWithFormat:@"%@RNTester/js/RNTesterApp.ios", bundlePrefix];
+  return [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:bundleRoot
                                                         fallbackResource:nil];
 }
 
diff --git a/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m b/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m
index ea631d344..8cc22ef0e 100644
--- a/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m
+++ b/RNTester/RNTesterIntegrationTests/RCTLoggingTests.m
@@ -30,8 +30,12 @@
 {
   NSURL *scriptURL;
   if (getenv("CI_USE_PACKAGER")) {
+    NSString *bundlePrefix = @"";
+    if (getenv("CI_USE_BUNDLE_PREFIX")) {
+      bundlePrefix = @"react-native-github/";
+    }
     NSString *app = @"IntegrationTests/IntegrationTestsApp";
-    scriptURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://localhost:8081/%@.bundle?platform=ios&dev=true", app]];
+    scriptURL = [NSURL URLWithString:[NSString stringWithFormat:@"http://localhost:8081/%@%@.bundle?platform=ios&dev=true", bundlePrefix, app]];
   } else {
     scriptURL = [[NSBundle bundleForClass:[RCTBridge class]] URLForResource:@"main" withExtension:@"jsbundle"];
   }