diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e4858e4..4442d29 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -62,8 +62,7 @@ jobs:
         submodule:
           - vendor/github.com/rails/sprockets
           - vendor/github.com/sass/sassc-rails
-          # https://github.com/twbs/bootstrap-rubygem/pull/287
-          # - vendor/github.com/twbs/bootstrap-rubygem
+          - vendor/github.com/twbs/bootstrap-rubygem
         exclude:
           - os: windows-latest
             ruby-version: jruby
diff --git a/Rakefile b/Rakefile
index 36fe9ca..d039b28 100644
--- a/Rakefile
+++ b/Rakefile
@@ -74,6 +74,10 @@ namespace :git do
               test/gemfiles/rails_7_0_dartsass.gemfile
             ]
             gemfiles.each do |gemfile|
+              # https://github.com/twbs/bootstrap-rubygem/pull/287
+              mkdir_p(File.absolute_path('test/dummy_rails/public', submodule))
+              touch(File.absolute_path('test/dummy_rails/public/favicon.ico', submodule))
+
               env = { 'BUNDLE_GEMFILE' => gemfile }
               sh(env, *%w[bundle install], chdir: submodule)
               sh(env, *%w[bundle exec rake], chdir: submodule)