diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 111cfdff..cb03a339 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        ruby:
+          - 2.7.6
+          - 3.0.4
         os:
           - ubuntu-latest
           - macos-latest
@@ -21,7 +24,8 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - if: matrix.os == 'windows-latest'
-        run: echo "startup --output_user_root=D:/_bazel" >> .bazelrc
+        run: echo "startup --output_user_root=D:/" >> .bazelrc
+      - run: echo 'RUBY_VERSION = "${{ matrix.ruby }}"' > ruby_version.bzl
       - run: bazel build ...
       - run: bazel run lib/gem:print-version
       - run: bazel run :rubocop
diff --git a/examples/gem/WORKSPACE b/examples/gem/WORKSPACE
index 448a2f37..3df32200 100644
--- a/examples/gem/WORKSPACE
+++ b/examples/gem/WORKSPACE
@@ -4,10 +4,9 @@ local_repository(
 )
 
 load("@rules_ruby//ruby:deps.bzl", "rb_bundle", "rb_download")
+load("ruby_version.bzl", "RUBY_VERSION")
 
-rb_download(
-    version = "2.7.5"
-)
+rb_download(version = RUBY_VERSION)
 
 rb_bundle(
     name = "bundle",
diff --git a/examples/gem/lib/gem/version.rb b/examples/gem/lib/gem/version.rb
index 920e5e7c..54fbf207 100644
--- a/examples/gem/lib/gem/version.rb
+++ b/examples/gem/lib/gem/version.rb
@@ -4,4 +4,7 @@ module GEM
   VERSION = '0.1.0'
 end
 
-puts "Version is: #{GEM::VERSION}" if __FILE__ == $PROGRAM_NAME
+if __FILE__ == $PROGRAM_NAME
+  puts "Ruby is: #{RUBY_ENGINE}/#{RUBY_VERSION}"
+  puts "Version is: #{GEM::VERSION}"
+end
diff --git a/examples/gem/ruby_version.bzl b/examples/gem/ruby_version.bzl
new file mode 100644
index 00000000..b13f3f26
--- /dev/null
+++ b/examples/gem/ruby_version.bzl
@@ -0,0 +1 @@
+RUBY_VERSION = "2.7.6"
diff --git a/ruby/private/bundle.bzl b/ruby/private/bundle.bzl
index 9ced10a6..49e5c4b8 100644
--- a/ruby/private/bundle.bzl
+++ b/ruby/private/bundle.bzl
@@ -26,7 +26,7 @@ def _rb_bundle_impl(repository_ctx):
         [bundle, "install"],
         environment = {
             "BUNDLE_BIN": repr(binstubs_path),
-            "BUNDLE_GEMFILE": repr(gemfile),
+            "BUNDLE_GEMFILE": gemfile.basename,
             "BUNDLE_SHEBANG": repr(ruby),
         },
         working_directory = repr(gemfile.dirname),
diff --git a/test.cmd b/test.cmd
index ef61d513..5008a420 100644
--- a/test.cmd
+++ b/test.cmd
@@ -1,14 +1,6 @@
 cd examples/gem
 
-:: rb_library
-bazel build :gem || exit /b
-
-:: rb_binary
+bazel build ... || exit /b
 bazel run lib/gem:print-version || exit /b
 bazel run :rubocop || exit /b
-
-:: rb_test
-bazel test spec:all || exit /b
-
-:: rb_gem_build
-bazel build :gem-build || exit /b
+bazel test spec/... || exit /b
diff --git a/test.sh b/test.sh
index b91c10e2..21b84828 100755
--- a/test.sh
+++ b/test.sh
@@ -2,15 +2,7 @@
 
 cd examples/gem || exit 1
 
-# rb_library
-bazel build :gem || exit 1
-
-# rb_binary
+bazel build ... || exit 1
 bazel run lib/gem:print-version || exit 1
 bazel run :rubocop || exit 1
-
-# rb_test
-bazel test spec:all || exit 1
-
-# rb_gem_build
-bazel build :gem-build || exit 1
+bazel test spec/... || exit 1