diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e589480..9991f94 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,7 @@ jobs:
         ruby:
           - 2.6
           - 2.7
-          - 3.0
+          - "3.0"
           - 3.1
           - ruby-head
           - jruby
diff --git a/.github/workflows/generate-docs.yml b/.github/workflows/generate-docs.yml
new file mode 100644
index 0000000..b8d16ed
--- /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@v2
+      - 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/README.md b/README.md
index cf45097..e117b32 100644
--- a/README.md
+++ b/README.md
@@ -200,7 +200,7 @@ Blank nodes associated with rdf:List statements used as part of a built-in are m
 * [SXP][SXP gem] (~> 1.2)
 
 ## Documentation
-Full documentation available on [RubyDoc.info](https://rubydoc.info/github/ruby-rdf/rdf-n3)
+Full documentation available on [RubyDoc.info](https://ruby-rdf.github.io/rdf-n3)
 
 ### Principle Classes
 * {RDF::N3}
@@ -220,7 +220,7 @@ Full documentation available on [RubyDoc.info](https://rubydoc.info/github/ruby-
 ## Resources
 * [RDF.rb][RDF.rb]
 * [Distiller](http://rdf.greggkellogg.net/distiller)
-* [Documentation](https://rubydoc.info/github/ruby-rdf/rdf-n3/)
+* [Documentation](https://ruby-rdf.github.io/rdf-n3/)
 * [History](file:file.History.html)
 * [Notation-3][N3]
 * [Team Submission][]
@@ -262,7 +262,7 @@ see <https://unlicense.org/> or the accompanying {file:UNLICENSE} file.
 * <https://github.com/ruby-rdf/rdf-n3>
 * <https://lists.w3.org/Archives/Public/public-rdf-ruby/>
 
-[RDF::Turtle]:            https://ruby-rdf.github.com/rdf-turtle/
+[RDF::Turtle]:            https://ruby-rdf.github.io/rdf-turtle/
 [Design Issues]:        https://www.w3.org/DesignIssues/Notation3.html "Notation-3 Design Issues"
 [Team Submission]:  https://www.w3.org/TeamSubmission/n3/
 [Turtle]:                     https://www.w3.org/TR/turtle/
@@ -274,7 +274,7 @@ see <https://unlicense.org/> or the accompanying {file:UNLICENSE} file.
 [W3C N3 Community Group]: https://www.w3.org/community/n3-dev/
 [N3]:                       https://w3c.github.io/N3/spec/
 [PEG]:                    https://en.wikipedia.org/wiki/Parsing_expression_grammar
-[RDF.rb]:                https://ruby-rdf.github.com/rdf
-[EBNF gem]:         https://ruby-rdf.github.com/ebnf
-[SPARQL gem]:     https://ruby-rdf.github.com/sparql
-[SXP gem]:            https://ruby-rdf.github.com/sxp
+[RDF.rb]:                https://ruby-rdf.github.io/rdf
+[EBNF gem]:         https://ruby-rdf.github.io/ebnf
+[SPARQL gem]:     https://ruby-rdf.github.io/sparql
+[SXP gem]:            https://ruby-rdf.github.io/sxp
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/lib/rdf/n3.rb b/lib/rdf/n3.rb
index b8ccbe4..7a07f43 100644
--- a/lib/rdf/n3.rb
+++ b/lib/rdf/n3.rb
@@ -14,7 +14,7 @@ module RDF
   #     end
   #   end
   #
-  # @see http://www.rubydoc.info/github/ruby-rdf/rdf/
+  # @see https://ruby-rdf.github.io/rdf/
   # @see https://www.w3.org/TR/REC-rdf-syntax/
   #
   # @author [Gregg Kellogg](http://greggkellogg.net/)
diff --git a/lib/rdf/n3/algebra/str/concatenation.rb b/lib/rdf/n3/algebra/str/concatenation.rb
index 8f37f91..52f1da0 100644
--- a/lib/rdf/n3/algebra/str/concatenation.rb
+++ b/lib/rdf/n3/algebra/str/concatenation.rb
@@ -11,7 +11,7 @@ class Concatenation < RDF::N3::Algebra::ListOperator
     ##
     # The string:concatenation operator takes a list of terms cast to strings and either binds the result of concatenating them to the output variable, removes a solution that does equal the literal object.
     #
-    # List entries are stringified using {SPARQL::Algebra::Expression.cast}.
+    # List entries are stringified using [SPARQL::Algebra::Expression.cast](https://ruby-rdf.github.io/sparql/SPARQL/Algebra/Expression#cast-class_method).
     #
     # @param [RDF::N3::List] list
     # @return [RDF::Term]
diff --git a/lib/rdf/n3/reader.rb b/lib/rdf/n3/reader.rb
index 483a3a0..ddd3d48 100644
--- a/lib/rdf/n3/reader.rb
+++ b/lib/rdf/n3/reader.rb
@@ -46,7 +46,7 @@ class Reader < RDF::Reader
 
     ##
     # N3 Reader options
-    # @see http://www.rubydoc.info/github/ruby-rdf/rdf/RDF/Reader#options-class_method
+    # @see https://ruby-rdf.github.io/rdf/RDF/Reader#options-class_method
     def self.options
       super + [
         RDF::CLI::Option.new(
diff --git a/lib/rdf/n3/refinements.rb b/lib/rdf/n3/refinements.rb
index c8d6112..6602b5b 100644
--- a/lib/rdf/n3/refinements.rb
+++ b/lib/rdf/n3/refinements.rb
@@ -173,6 +173,32 @@ def evaluate(bindings, formulae:, **options)
 
   refine ::RDF::Graph do
     # Allow a graph to be treated as a term in a statement.
-    include ::RDF::Term
+
+    ##
+    # @overload term?
+    #   Returns `true` if `self` is a {RDF::Term}.
+    #
+    #   @return [Boolean]
+    # @overload term?(name)
+    #   Returns `true` if `self` contains the given RDF subject term.
+    #
+    #   @param  [RDF::Resource] value
+    #   @return [Boolean]
+    def term?(*args)
+      case args.length
+      when 0 then true
+      when 1 then false
+      else raise ArgumentError("wrong number of arguments (given #{args.length}, expected 0 or 1)")
+      end
+    end
+
+    ##
+    # Returns itself.
+    #
+    # @return [RDF::Value]
+    def to_term
+      statements.map(&:terms)
+      self
+    end
   end
 end
diff --git a/lib/rdf/n3/writer.rb b/lib/rdf/n3/writer.rb
index 94a7132..ea56912 100644
--- a/lib/rdf/n3/writer.rb
+++ b/lib/rdf/n3/writer.rb
@@ -63,7 +63,7 @@ class Writer < RDF::Writer
 
     ##
     # N3 Writer options
-    # @see http://www.rubydoc.info/github/ruby-rdf/rdf/RDF/Writer#options-class_method
+    # @see https://ruby-rdf.github.io/rdf/RDF/Writer#options-class_method
     def self.options
       super + [
         RDF::CLI::Option.new(
diff --git a/rdf-n3.gemspec b/rdf-n3.gemspec
index bc8feb7..5eb93d8 100755
--- a/rdf-n3.gemspec
+++ b/rdf-n3.gemspec
@@ -6,10 +6,17 @@ Gem::Specification.new do |gem|
   gem.date                  = File.mtime('VERSION').strftime('%Y-%m-%d')
 
   gem.name                  = %q{rdf-n3}
-  gem.homepage              = %q{https://ruby-rdf.github.com/rdf-n3}
+  gem.homepage              = %q{https://ruby-rdf.github.io/rdf-n3}
   gem.license               = 'Unlicense'
   gem.summary               = %q{Notation3 reader/writer and reasoner for RDF.rb.}
   gem.description           = %q{RDF::N3 is an Notation-3 reader/writer and reasoner for the RDF.rb library suite.}
+  gem.metadata           = {
+    "documentation_uri" => "https://ruby-rdf.github.io/rdf-n3",
+    "bug_tracker_uri"   => "https://github.com/ruby-rdf/rdf-n3/issues",
+    "homepage_uri"      => "https://github.com/ruby-rdf/rdf-n3",
+    "mailing_list_uri"  => "https://lists.w3.org/Archives/Public/public-rdf-ruby/",
+    "source_code_uri"   => "https://github.com/ruby-rdf/rdf-n3",
+  }
 
   gem.authors               = %w(Gregg Kellogg)
   gem.email                 = 'public-rdf-ruby@w3.org'