diff --git a/dev/integration_tests/flutter_gallery/ios/fastlane/Fastfile b/dev/integration_tests/flutter_gallery/ios/fastlane/Fastfile
index 7069fd8c9b8..d0590a44925 100644
--- a/dev/integration_tests/flutter_gallery/ios/fastlane/Fastfile
+++ b/dev/integration_tests/flutter_gallery/ios/fastlane/Fastfile
@@ -74,7 +74,7 @@ platform :ios do
       scheme: 'Runner',
       export_method: 'app-store',
       # Verify that the right signing identity is used for publishing.
-      codesigning_identity: 'iPhone Distribution: FLUTTER.IO LLC (S8QB4VV633)',
+      codesigning_identity: 'Apple Distribution: FLUTTER.IO LLC (S8QB4VV633)',
     )
 
     if options[:upload]
diff --git a/dev/integration_tests/flutter_gallery/ios/fastlane/README.md b/dev/integration_tests/flutter_gallery/ios/fastlane/README.md
index 410b0b4fbfd..3f040a79654 100644
--- a/dev/integration_tests/flutter_gallery/ios/fastlane/README.md
+++ b/dev/integration_tests/flutter_gallery/ios/fastlane/README.md
@@ -8,4 +8,11 @@ This is done using the [FastLane](https://fastlane.tools) tool suite.
 Deployment can be done manually by Googlers by following
 go/flutter-gallery-publish (internal doc).
 
-Deployment is automatically done by Cirrus on tagged branch commits.
\ No newline at end of file
+Deployment is automatically done by Cirrus on tagged branch commits.
+
+## How to renew the Apple distribution certificate
+
+In case the distribution certifcate expires, for example, this error message
+occured: "Your certificate ... is not valid, please check end date and
+renew it if necessary", a Googler can renew it by following the instructions at
+http://go/googler-flutter-signing#how-to-renew.