@@ -66,8 +66,12 @@ jobs:
 with:
 ruby-version: ${{ matrix.ruby-version }}
 - name: Install as gem
+env:
+BUNDLE_PATH__SYSTEM: "true"
+BUNDLE_WITHOUT: "benchmark:development"
 run: |
 rake install
+bundle install
  - name: Test
 run: |
 ruby -run -e mkdir -- tmp

@@ -6,9 +6,15 @@ git_source(:) {|repo_name| "https://.com/#{repo_name}" }
 gemspec
 
 group :development do
-gem "benchmark_driver"
 gem "bundler"
 gem "rake"
+end
+
+group :benchmark do
+gem "benchmark_driver"
+end
+
+group :test do
 gem "test-unit"
 gem "test-unit-ruby-core"
 end