diff --git a/.github/workflows/flash-list.yml b/.github/workflows/flash-list.yml
index 01ef1babb..f3e188f9b 100644
--- a/.github/workflows/flash-list.yml
+++ b/.github/workflows/flash-list.yml
@@ -142,6 +142,7 @@ jobs:
           cd fixture/react-native
           yarn
           cd ios
+          gem install bundler:2.4.8
           bundle install
           bundle exec pod install
       - name: Build iOS
@@ -205,6 +206,7 @@ jobs:
           cd fixture/react-native
           yarn
           cd ios
+          gem install bundler:2.4.8
           bundle install
           bundle exec pod install
       - name: Build and Run e2e tests
diff --git a/fixture/react-native/ios/Gemfile b/fixture/react-native/ios/Gemfile
index 2ffb17b7b..1286d5c07 100644
--- a/fixture/react-native/ios/Gemfile
+++ b/fixture/react-native/ios/Gemfile
@@ -1,3 +1,4 @@
+source 'https://rubygems.org'
 # You may use http://rbenv.org/ or https://rvm.io/ to install and use this version
 ruby ">= 2.6.10"