diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1c88477..4b69b7e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,16 +19,10 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby:
-          - 2.6
-          - 2.7
-          - 3.0
-          - 3.1
-          - ruby-head
-          - jruby
+        ruby: [2.6, 2.7, '3.0', 3.1, 3.2, ruby-head, jruby]
     steps:
       - name: Clone repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
diff --git a/.github/workflows/generate-docs.yml b/.github/workflows/generate-docs.yml
new file mode 100644
index 0000000..65aea93
--- /dev/null
+++ b/.github/workflows/generate-docs.yml
@@ -0,0 +1,27 @@
+name: Build & deploy documentation
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    name: Update gh-pages with docs
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v3
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: "3.1"
+      - name: Install required gem dependencies
+        run: gem install yard --no-document
+      - name: Build YARD Ruby Documentation
+        run: yardoc
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./doc/yard
+          publish_branch: gh-pages
diff --git a/Gemfile b/Gemfile
index 2ec0e33..4c9335f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,8 +3,8 @@ source "https://rubygems.org"
 gemspec
 
 gem 'rack-rdf',           git: "https://github.com/ruby-rdf/rack-rdf",     branch: "develop"
-gem "rdf",                git: "https://github.com/ruby-rdf/rdf",                 branch: "develop"
-gem 'rdf-turtle',         git: "https://github.com/ruby-rdf/rdf-turtle",          branch: "develop"
+gem "rdf",                git: "https://github.com/ruby-rdf/rdf",          branch: "develop"
+gem 'rdf-turtle',         git: "https://github.com/ruby-rdf/rdf-turtle",   branch: "develop"
 
 group :development do
   gem "byebug",           platforms: :mri
diff --git a/README.md b/README.md
index 8c0ce2e..43c6763 100644
--- a/README.md
+++ b/README.md
@@ -115,11 +115,11 @@ operation and details of the content negotiation.
 
 ## Documentation
 
-* [Sinatra::RDF](https://www.rubydoc.info/github/ruby-rdf/sinatra-rdf/master)
+* [Sinatra::RDF](https://ruby-rdf.github.io/sinatra-rdf/master)
 
 ## Dependencies
 
-* [Sinatra](https://rubygems.org/gems/sinatra) (~> 2.1)
+* [Sinatra](https://rubygems.org/gems/sinatra) (~> 3.0)
 * [Rack::RDF](https://rubygems.org/gems/rack-rdf) (~> 3.2)
 
 ## Installation
@@ -160,7 +160,7 @@ information, see <https://unlicense.org/> or the accompanying UNLICENSE file.
 
 [Sinatra]:          https://www.sinatrarb.com/
 [Rack]:             https://rack.github.com/
-[RDF.rb]:           https://ruby-rdf.github.com/rdf/
+[RDF.rb]:           https://ruby-rdf.github.io/rdf/
 [Rack::RDF]:        https://rubygems.org/gems/rack-rdf/
 [Linked Data]:      https://linkeddata.org/
 [conneg]:           https://en.wikipedia.org/wiki/Content_negotiation
diff --git a/VERSION b/VERSION
index 944880f..e4604e3 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.2.0
+3.2.1
diff --git a/sinatra-rdf.gemspec b/sinatra-rdf.gemspec
index 8c5a428..90654e7 100755
--- a/sinatra-rdf.gemspec
+++ b/sinatra-rdf.gemspec
@@ -6,10 +6,17 @@ Gem::Specification.new do |gem|
   gem.date               = File.mtime('VERSION').strftime('%Y-%m-%d')
 
   gem.name               = 'sinatra-rdf'
-  gem.homepage           = 'https://ruby-rdf.github.com/sinatra-rdf'
+  gem.homepage           = 'https://github.com/ruby-rdf/sinatra-rdf'
   gem.license            = 'Unlicense'
   gem.summary            = 'Linked Data content negotiation for Sinatra applications.'
   gem.description        = 'Sinatra extension for Linked Data content negotiation.'
+  gem.metadata           = {
+    "documentation_uri" => "https://ruby-rdf.github.io/sinatra-rdf",
+    "bug_tracker_uri"   => "https://github.com/ruby-rdf/sinatra-rdf/issues",
+    "homepage_uri"      => "https://github.com/ruby-rdf/sinatra-rdf",
+    "mailing_list_uri"  => "https://lists.w3.org/Archives/Public/public-rdf-ruby/",
+    "source_code_uri"   => "https://github.com/ruby-rdf/sinatra-rdf",
+  }
 
   gem.authors            = ['Arto Bendiken', 'Gregg Kellogg']
   gem.email              = 'public-rdf-ruby@w3.org'
@@ -22,11 +29,11 @@ Gem::Specification.new do |gem|
 
   gem.required_ruby_version      = '>= 2.6'
   gem.requirements               = []
-  gem.add_runtime_dependency     'rack-rdf',        '~> 3.2'
-  gem.add_runtime_dependency     'sinatra',         '~> 2.1'
+  gem.add_runtime_dependency     'rack-rdf',        '~> 3.2', '>= 3.2.3'
+  gem.add_runtime_dependency     'sinatra',         '~> 3.0', '>= 3.0.5'
 
   gem.add_development_dependency 'yard' ,           '~> 0.9'
-  gem.add_development_dependency 'rspec',           '~> 3.10'
-  gem.add_development_dependency 'rack-test',       '~> 1.1'
+  gem.add_development_dependency 'rspec',           '~> 3.12'
+  gem.add_development_dependency 'rack-test',       '~> 2.1'
   gem.post_install_message       = nil
 end