diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index daccbae..5a97386 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,7 +25,7 @@ jobs:
       fail-fast: false
       matrix:
         platform: [ubuntu-latest, windows-latest, macos-latest]
-        ruby: ["2.3", "2.4", "2.5", "2.6", "2.7", "3.0", "3.1", "3.2", "3.3", "head"]
+        ruby: ["2.3", "2.4", "2.5", "2.6", "2.7", "3.0", "3.1", "3.2", "3.3"]
         exclude:
           # I can't figure out how to install these on macos through setup-ruby
           - ruby: "2.3"
diff --git a/.github/workflows/upstream.yml b/.github/workflows/upstream.yml
index 2f73fc6..284b754 100644
--- a/.github/workflows/upstream.yml
+++ b/.github/workflows/upstream.yml
@@ -14,7 +14,26 @@ on:
       - .github/workflows/upstream.yml # this file
 
 jobs:
-  skeleton:
-    runs-on: ubuntu-latest
+  test-unit:
+    env:
+      MAKEFLAGS: -j2
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [ubuntu-latest, windows-latest, macos-latest]
+        ruby: ["head"]
+    runs-on: ${{ matrix.platform }}
     steps:
-      - run: echo "Hello, World!"
+      - name: configure git crlf on windows
+        if: matrix.platform == 'windows-latest'
+        run: |
+          git config --system core.autocrlf false
+          git config --system core.eol lf
+      - uses: actions/checkout@v4
+      - uses: MSP-Greg/setup-ruby-pkgs@v1
+        with:
+          apt-get: _update_ build-essential cmake
+          mingw: _upgrade_ cmake
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: bundle exec rake test:unit
diff --git a/Gemfile b/Gemfile
index 99d6ed5..0b61a9e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,15 @@
 source 'https://rubygems.org'
 
+gemspec
+
 gem "net-ftp" if Gem::Requirement.new("> 3.1.0.dev").satisfied_by?(Gem::Version.new(RUBY_VERSION))
 
-# Specify your gem's dependencies in mini_portile2.gemspec
-gemspec
+gem "minitar", "0.9"
+gem "minitest", "~> 5.15" # open range for ruby 2.3 support
+gem "minitest-hooks", "1.5.1"
+gem "rake", "13.2.1"
+if RUBY_VERSION >= "3.4"
+  gem "webrick", git: "https://github.com/ruby/webrick" # shouldn't be necessary to pin once webrick 1.8.2 or 1.9.0 is released
+else
+  gem "webrick"
+end
diff --git a/mini_portile2.gemspec b/mini_portile2.gemspec
index 64619cd..b2dd49d 100644
--- a/mini_portile2.gemspec
+++ b/mini_portile2.gemspec
@@ -34,12 +34,5 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = ">= 2.3.0"
 
-  spec.add_development_dependency "bundler", "~> 2.2"
-  spec.add_development_dependency "minitar", "~> 0.9"
-  spec.add_development_dependency "minitest", "~> 5.15"
-  spec.add_development_dependency "minitest-hooks", "~> 1.5"
-  spec.add_development_dependency "rake", "~> 13.0"
-  spec.add_development_dependency "webrick", "~> 1.7"
-
   spec.metadata["changelog_uri"] = spec.homepage + "/blob/main/CHANGELOG.md"
 end