diff --git a/.travis.yml b/.travis.yml
index 3d5c433..f5b20ae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,14 +4,14 @@ script: "bundle exec rspec spec"
 env:
   - CI=true
 rvm:
-  - 2.0
-  - 2.1
-  - 2.2.4
-  - 2.3.0
-  - jruby-9.0.4.0
-  - rbx-2
+  - 2.2.6
+  - 2.3.3
+  - 2.4.0  
+  - jruby
+  - rbx
 cache: bundler
 sudo: false
 matrix:
   allow_failures:
-      - rvm: rbx-2
+    - rvm: rbx
+    - rvm: jruby
diff --git a/Gemfile b/Gemfile
index cf8b9a2..a78d207 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,10 +5,6 @@ gemspec
 gem 'rdf',            github: "ruby-rdf/rdf",             branch: "develop"
 gem 'rdf-isomorphic', github: "ruby-rdf/rdf-isomorphic",  branch: "develop"
 
-group :development do
-  gem "wirble"
-end
-
 group :debug do
   gem "byebug", platform: :mri
 end
diff --git a/README.md b/README.md
index b7587fc..5361fe3 100644
--- a/README.md
+++ b/README.md
@@ -31,8 +31,8 @@ Note that in most cases, if the instance is empty and mutable, the appropriate s
 
 ## Dependencies
 
-* [RDF.rb](http://rubygems.org/gems/rdf) (>= 0.3.1)
-* [RSpec](http://rubygems.org/gems/rspec) (>= 2.1.0)
+* [RDF.rb](http://rubygems.org/gems/rdf) (~> 2.0)
+* [RSpec](http://rubygems.org/gems/rspec) (~> 3.0)
 
 ## Installation
 
diff --git a/VERSION b/VERSION
index 227cea2..a1bba89 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.0.0
+2.2.0-rc1
diff --git a/dependencyci.yml b/dependencyci.yml
new file mode 100644
index 0000000..0c67c1b
--- /dev/null
+++ b/dependencyci.yml
@@ -0,0 +1,5 @@
+platform:
+  Rubygems:
+    rdf-isomorphic:
+      tests:
+        unmaintained: skip
\ No newline at end of file
diff --git a/lib/rdf/spec/enumerable.rb b/lib/rdf/spec/enumerable.rb
index 8be1a08..4cf0d37 100644
--- a/lib/rdf/spec/enumerable.rb
+++ b/lib/rdf/spec/enumerable.rb
@@ -391,11 +391,16 @@
 
     its(:each_term) {is_expected.to be_an_enumerator}
     context "#each_term" do
-      specify {
-        expect(subject.each_term.reject(&:node?).size).to eq non_bnode_terms.length
-      }
-      specify {expect(subject.each_term).to all(be_a_term)}
-      specify {subject.each_term {|value| expect(non_bnode_terms).to include(value) unless value.node?}}
+      it 'has correct number of terms' do
+        expected_count = non_bnode_terms.length
+        expected_count = expected_count - 3 unless 
+          subject.supports?(:literal_equality)
+
+        expect(subject.each_term.reject(&:node?).size).to eq expected_count
+      end
+
+      specify { expect(subject.each_term).to all(be_a_term) }
+      specify { subject.each_term {|value| expect(non_bnode_terms).to include(value) unless value.node?} }
     end
 
     its(:enum_term) {is_expected.to be_an_enumerator}
@@ -507,11 +512,23 @@
 
 
   context "when converting" do
-    it {is_expected.to respond_to(:to_hash)}
-    its(:to_hash) {is_expected.to be_instance_of(Hash)}
-    context "#to_hash" do
+    it {is_expected.to respond_to(:to_h)}
+    it {is_expected.not_to respond_to(:to_hash)}
+    its(:to_hash) {
+      expect {
+        is_expected.to be_instance_of(Hash)
+      }.to write("DEPRECATION").to(:error)
+    }
+    describe "#to_h" do
       it "should have as many keys as subjects" do
-        expect(subject.to_hash.keys.size).to eq enumerable.subjects.to_a.size
+        expect(subject.to_h.keys.size).to eq enumerable.subjects.to_a.size
+      end
+    end
+    describe "#to_h" do
+      it "should have as many keys as subjects (with deprecation)" do
+        expect {
+          expect(subject.to_hash.keys.size).to eq enumerable.subjects.to_a.size
+        }.to write("DEPRECATION").to(:error)
       end
     end
   end
diff --git a/lib/rdf/spec/mutable.rb b/lib/rdf/spec/mutable.rb
index 72d38d7..1611a73 100644
--- a/lib/rdf/spec/mutable.rb
+++ b/lib/rdf/spec/mutable.rb
@@ -262,7 +262,7 @@
         it 'handles Graph names' do
           if @supports_named_graphs
             dels = non_bnode_statements.take(10).map do |st|
-              RDF::Statement.from(st.to_hash.merge(graph_name: RDF::URI('http://example.com/fake')))
+              RDF::Statement.from(st.to_h.merge(graph_name: RDF::URI('http://example.com/fake')))
             end
             dels.map! { |st| st.graph_name = RDF::URI('http://example.com/fake'); st }
             dels.extend(RDF::Enumerable)
diff --git a/lib/rdf/spec/queryable.rb b/lib/rdf/spec/queryable.rb
index 76954fc..510bc56 100644
--- a/lib/rdf/spec/queryable.rb
+++ b/lib/rdf/spec/queryable.rb
@@ -60,18 +60,31 @@
 
       context "with specific patterns" do
         # Note that "01" should not match 1, per data-r2/expr-equal/sameTerm
-        {
-          [RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1])],
-          [RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), nil] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1])],
-          [RDF::URI("http://example.org/xi1"), nil, 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1])],
-          [nil, RDF::URI("http://example.org/p"), 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1]), RDF::Statement.from([RDF::URI("http://example.org/xi2"), RDF::URI("http://example.org/p"), 1])],
-          [nil, nil, 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1]), RDF::Statement.from([RDF::URI("http://example.org/xi2"), RDF::URI("http://example.org/p"), 1])],
-          [nil, RDF::URI("http://example.org/p"), RDF::Literal::Double.new("1.0e0")] => [RDF::Statement.from([RDF::URI("http://example.org/xd1"), RDF::URI("http://example.org/p"), RDF::Literal::Double.new("1.0e0")])],
-        }.each do |pattern, result|
-          pattern = RDF::Query::Pattern.from(pattern)
+        patterns =
+          { [RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1])],
+            [RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), nil] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1])],
+            [RDF::URI("http://example.org/xi1"), nil, 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1])],
+            [nil, RDF::URI("http://example.org/p"), 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1]), RDF::Statement.from([RDF::URI("http://example.org/xi2"), RDF::URI("http://example.org/p"), 1])],
+            [nil, nil, 1] => [RDF::Statement.from([RDF::URI("http://example.org/xi1"), RDF::URI("http://example.org/p"), 1]), RDF::Statement.from([RDF::URI("http://example.org/xi2"), RDF::URI("http://example.org/p"), 1])],
+            [nil, RDF::URI("http://example.org/p"), RDF::Literal::Double.new("1.0e0")] => [RDF::Statement.from([RDF::URI("http://example.org/xd1"), RDF::URI("http://example.org/p"), RDF::Literal::Double.new("1.0e0")])],
+          }
+
+        literal_eq_patterns = 
+          [[nil, RDF::URI("http://example.org/p"), 1], 
+           [nil, nil, 1], 
+           [nil, RDF::URI("http://example.org/p"), RDF::Literal::Double.new("1.0e0")]]
+        
+        patterns.each do |pattern, result|
           it "returns #{result.inspect} given #{pattern.inspect}" do
+            unless subject.supports?(:literal_equality)
+              next if literal_eq_patterns.include?(pattern)
+            end
+
+            pattern = RDF::Query::Pattern.from(pattern)
             solutions = []
+
             subject.send(method, pattern) {|s| solutions << s}
+
             expect(solutions).to contain_exactly(*result)
           end
         end
@@ -85,18 +98,6 @@
           expect(solutions.size).to eq @statements.size
         end
 
-        it "returns statements from unnamed graphs with false graph_name" do
-          pattern = RDF::Query::Pattern.new(nil, nil, nil, graph_name: false)
-          solutions = []
-          subject.send(method, pattern) {|s| solutions << s}
-
-          named_statements = subject.statements
-          named_statements.reject! {|st| st.has_name?} unless
-            subject.respond_to?(:graph_name) && !subject.graph_name.nil?
-
-          expect(solutions.size).to eq named_statements.size
-        end
-
         it "returns statements from named graphs with variable graph_name" do
           unless subject.graph_names.to_a.empty?
             pattern = RDF::Query::Pattern.new(nil, nil, nil, graph_name: :c)
@@ -276,7 +277,9 @@
               end
 
               it 'has two solutions' do
-                expect(result.count).to eq 2
+                if subject.supports?(:literal_equality)
+                  expect(result.count).to eq 2
+                end
               end
 
               it "has xi1 as a solution" do
@@ -296,7 +299,9 @@
               end
 
               it 'has one solution' do
-                expect(result.count).to eq 1
+                if subject.supports?(:literal_equality)
+                  expect(result.count).to eq 1
+                end
               end
 
               it "has xd1 as a solution" do
@@ -314,8 +319,7 @@
       before { skip unless subject.respond_to?(:query_execute, true ) }
 
       it "defines a protected #query_execute method" do
-        expect(subject.class.protected_method_defined?(:query_execute))
-          .to be_truthy
+        expect(subject.protected_methods).to include :query_execute
       end
 
       include_examples 'query execution', :query_execute
@@ -327,7 +331,7 @@
       before { skip unless subject.respond_to?(:query_pattern, true ) }
 
       it "defines a protected #query_pattern method" do
-        expect(subject.class.protected_method_defined?(:query_pattern)).to be_truthy
+        expect(subject.protected_methods).to include :query_pattern
       end
       
       include_examples 'query pattern', :query_pattern 
diff --git a/lib/rdf/spec/repository.rb b/lib/rdf/spec/repository.rb
index 717693c..fbedb16 100644
--- a/lib/rdf/spec/repository.rb
+++ b/lib/rdf/spec/repository.rb
@@ -48,35 +48,6 @@
     end
   end
 
-  describe "#transaction" do
-    it 'gives an immutable transaction' do
-      expect { subject.transaction { insert([]) } }.to raise_error TypeError
-    end
-
-    it 'commits a successful transaction' do
-      statement = RDF::Statement(:s, RDF.type, :o)
-      expect(subject).to receive(:commit_transaction).and_call_original
-      
-      expect do
-        subject.transaction(mutable: true) { insert(statement) }
-      end.to change { subject.statements }.to include(statement)
-    end
-
-    it 'rolls back a failed transaction' do
-      original_contents = subject.statements
-      expect(subject).to receive(:rollback_transaction).and_call_original
-
-      expect do
-        subject.transaction(mutable: true) do
-          delete(*@statements)
-          raise 'my error'
-        end
-      end.to raise_error RuntimeError
-
-      expect(subject.statements).to contain_exactly(*original_contents)
-    end
-  end
-
   context "with snapshot support" do
 
     describe '#snapshot' do
diff --git a/lib/rdf/spec/transactable.rb b/lib/rdf/spec/transactable.rb
index dc5ca5c..8d2a35b 100644
--- a/lib/rdf/spec/transactable.rb
+++ b/lib/rdf/spec/transactable.rb
@@ -18,7 +18,9 @@
     end
 
     it 'commits a successful transaction' do
-      statement = RDF::Statement(:s, RDF.type, :o)
+      statement = RDF::Statement(RDF::URI('http://example.com/s'), 
+                                 RDF.type, 
+                                 RDF::URI('http://example.com/o'))
       expect(subject).to receive(:commit_transaction).and_call_original
       
       expect do
diff --git a/lib/rdf/spec/transaction.rb b/lib/rdf/spec/transaction.rb
index 8be8e32..ef9ca0f 100644
--- a/lib/rdf/spec/transaction.rb
+++ b/lib/rdf/spec/transaction.rb
@@ -250,6 +250,26 @@
     end
   end
 
+  describe '#mutated?' do
+    let(:st) { RDF::Statement(:s, RDF::URI('http://example.com/p'), 'o') }
+
+    it 'returns true after a successful insert' do
+      begin 
+        expect { subject.insert(st) }
+          .to change { subject.mutated? }.from(false).to(true)
+      rescue NotImplementedError; end
+    end
+
+    it 'returns true after a successful delete' do
+      repository.insert(st)
+
+      begin 
+        expect { subject.delete(st) }
+          .to change { subject.mutated? }.from(false).to(true)
+      rescue NotImplementedError; end
+    end
+  end
+
   describe '#execute' do
     let(:st) { RDF::Statement(:s, RDF::URI('http://example.com/p'), 'o') }
       
diff --git a/lib/rdf/spec/writable.rb b/lib/rdf/spec/writable.rb
index fc3c6f5..f111dc1 100644
--- a/lib/rdf/spec/writable.rb
+++ b/lib/rdf/spec/writable.rb
@@ -126,9 +126,9 @@
     end
 
     it "should not insert an incomplete statement" do
-      expect {subject.insert(RDF::Statement.from(statement.to_hash.merge(subject: nil)))}.to raise_error(ArgumentError)
-      expect {subject.insert(RDF::Statement.from(statement.to_hash.merge(predicate: nil)))}.to raise_error(ArgumentError)
-      expect {subject.insert(RDF::Statement.from(statement.to_hash.merge(object: nil)))}.to raise_error(ArgumentError)
+      expect {subject.insert(RDF::Statement.from(statement.to_h.merge(subject: nil)))}.to raise_error(ArgumentError)
+      expect {subject.insert(RDF::Statement.from(statement.to_h.merge(predicate: nil)))}.to raise_error(ArgumentError)
+      expect {subject.insert(RDF::Statement.from(statement.to_h.merge(object: nil)))}.to raise_error(ArgumentError)
       expect(subject.count).to eql 0
     end
 
diff --git a/rdf-spec.gemspec b/rdf-spec.gemspec
index 8d765e6..0814d07 100755
--- a/rdf-spec.gemspec
+++ b/rdf-spec.gemspec
@@ -25,13 +25,13 @@ Gem::Specification.new do |gem|
   gem.test_files         = %w()
   gem.has_rdoc           = false
 
-  gem.required_ruby_version      = '>= 2.0'
+  gem.required_ruby_version      = '>= 2.2.2'
   gem.requirements               = []
-  gem.add_runtime_dependency     'rdf',             '~> 2.0'
+  gem.add_runtime_dependency     'rdf',             '~> 2.1'
   gem.add_runtime_dependency     'rdf-isomorphic',  '~> 2.0'
-  gem.add_runtime_dependency     'rspec',           '~> 3.0'
+  gem.add_runtime_dependency     'rspec',           '~> 3.5'
   gem.add_runtime_dependency     'rspec-its',       '~> 1.0'
-  gem.add_runtime_dependency     'webmock',         '~> 1.17'
+  gem.add_runtime_dependency     'webmock',         '~> 2.3'
   gem.add_development_dependency 'yard' ,           '~> 0.8'
   gem.post_install_message       = nil
 end