diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 00000000..0917dacb
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,36 @@
+# How to contribute
+
+Community contributions are essential for keeping Ruby RDF great. We want to keep it as easy as possible to contribute changes that get things working in your environment. There are a few guidelines that we need contributors to follow so that we can have a chance of keeping on top of things.
+
+## Development
+
+This repository uses [Git Flow](https://github.com/nvie/gitflow) to manage development and release activity. All submissions _must_ be on a feature branch based on the _develop_ branch to ease staging and integration.
+
+* create or respond to an issue on the [Github Repository](http://github.com/ruby-rdf/sparql/issues)
+* Fork and clone the repo:
+  `git clone git@github.com:your-username/sparql.git`
+* Install bundle:
+  `bundle install`
+* Create tests in RSpec and make sure you achieve at least 90% code coverage for the feature your adding or behavior being modified.
+* Push to your fork and [submit a pull request][pr].
+
+## Do's and Dont's
+* Do your best to adhere to the existing coding conventions and idioms.
+* Don't use hard tabs, and don't leave trailing whitespace on any line.
+  Before committing, run `git diff --check` to make sure of this.
+* Do document every method you add using [YARD][] annotations. Read the
+  [tutorial][YARD-GS] or just look at the existing code for examples.
+* Don't touch the `.gemspec` or `VERSION` files. If you need to change them,
+  do so on your private branch only.
+* Do feel free to add yourself to the `CREDITS` file and the
+  corresponding list in the the `README`. Alphabetical order applies.
+* Don't touch the `AUTHORS` file. If your contributions are significant
+  enough, be assured we will eventually add you in there.
+* Do note that in order for us to merge any non-trivial changes (as a rule
+  of thumb, additions larger than about 15 lines of code), we need an
+  explicit [public domain dedication][PDD] on record from you.
+
+[YARD]:    http://yardoc.org/
+[YARD-GS]: http://rubydoc.info/docs/yard/file/docs/GettingStarted.md
+[PDD]:     http://lists.w3.org/Archives/Public/public-rdf-ruby/2010May/0013.html
+[pr]:      https://github.com/ruby-rdf/sparql/compare/
diff --git a/Gemfile b/Gemfile
index c5c1fa2c..f8e45ced 100644
--- a/Gemfile
+++ b/Gemfile
@@ -7,7 +7,7 @@ gem 'rdf',                github: "ruby-rdf/rdf",                 branch: "devel
 gem 'rdf-aggregate-repo', github: "ruby-rdf/rdf-aggregate-repo",  branch: "develop"
 gem "rdf-xsd",            github: "ruby-rdf/rdf-xsd",             branch: "develop"
 gem 'sparql-client',      github: "ruby-rdf/sparql-client",       branch: "develop"
-gem 'sxp',                github: "gkellogg/sxp-ruby"
+gem 'sxp',                github: "gkellogg/sxp-ruby",            branch: "develop"
 
 group :development do
   gem 'json-ld',          github: "ruby-rdf/json-ld",             branch: "develop"
@@ -25,6 +25,7 @@ group :development do
   gem 'rdf-trix',         github: "ruby-rdf/rdf-trix",            branch: "develop"
   gem 'rdf-turtle',       github: "ruby-rdf/rdf-turtle",          branch: "develop"
   gem 'rdf-vocab',        github: "ruby-rdf/rdf-vocab",           branch: "develop"
+  gem 'ld-patch',         github: "gkellogg/ld-patch",            branch: "develop"
   gem "equivalent-xml",   '>= 0.2.8'
   gem 'psych',            platforms: [:mri, :rbx]
   gem 'simplecov',        require: false
diff --git a/VERSION b/VERSION
index 28bcf805..227cea21 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.0.0.beta2
+2.0.0
diff --git a/sparql.gemspec b/sparql.gemspec
index 5162c616..5b00a244 100755
--- a/sparql.gemspec
+++ b/sparql.gemspec
@@ -35,19 +35,19 @@ Gem::Specification.new do |gem|
 
   gem.required_ruby_version      = '>= 2.0'
   gem.requirements               = []
-  gem.add_runtime_dependency     'rdf',                '>= 2.0.0.beta', '< 3'
-  gem.add_runtime_dependency     'rdf-aggregate-repo', '>= 2.0.0.beta', '< 3'
-  gem.add_runtime_dependency     'ebnf',               '~> 1.0', '>= 1.0.1.beta'
+  gem.add_runtime_dependency     'rdf',                '~> 2.0'
+  gem.add_runtime_dependency     'rdf-aggregate-repo', '~> 2.0'
+  gem.add_runtime_dependency     'ebnf',               '~> 1.0', '>= 1.0.1'
   gem.add_runtime_dependency     'builder',            '~> 3.2'
-  gem.add_runtime_dependency     'sxp',                '>= 1.0.0.beta', '< 2'
-  gem.add_runtime_dependency     'sparql-client',      '>= 2.0.0.beta', '< 3'
-  gem.add_runtime_dependency     'rdf-xsd',            '>= 2.0.0.beta', '< 3'
+  gem.add_runtime_dependency     'sxp',                '~> 1.0'
+  gem.add_runtime_dependency     'sparql-client',      '~> 2.0'
+  gem.add_runtime_dependency     'rdf-xsd',            '~> 2.0'
 
   gem.add_development_dependency 'sinatra',            '~> 1.4', '>= 1.4.6'
   gem.add_development_dependency 'rack',               '~> 1.6'
   gem.add_development_dependency 'rack-test',          '~> 0.6'
   gem.add_development_dependency 'linkeddata',         '>= 1.99', '< 3'
-  gem.add_development_dependency 'rdf-spec',           '>= 2.0.0.beta', '< 3'
+  gem.add_development_dependency 'rdf-spec',           '~> 2.0'
   gem.add_development_dependency 'open-uri-cached',    '~> 0.0', '>= 0.0.5'
   gem.add_development_dependency 'rspec',              '~> 3.2'
   gem.add_development_dependency 'rspec-its',          '~> 1.2'