diff --git a/.env.example b/.env.example
index f6a3966..7ae121f 100644
--- a/.env.example
+++ b/.env.example
@@ -1 +1,6 @@
-LOKALISE_API_TOKEN=123
\ No newline at end of file
+LOKALISE_API_TOKEN=123
+OAUTH2_CLIENT_ID=123
+OAUTH2_CLIENT_SECRET=123
+OAUTH2_TOKEN=123
+OAUTH2_REFRESH_TOKEN=123
+OAUTH2_CODE=123
\ No newline at end of file
diff --git a/docs/additional_info/changelog.md b/docs/additional_info/changelog.md
index 9bb60f2..e0612a7 100644
--- a/docs/additional_info/changelog.md
+++ b/docs/additional_info/changelog.md
@@ -1,10 +1,10 @@
 # Changelog
 
-## 8.0.0
+## 8.0.0 (21-Jul-2023)
 
 In this version **SDK has been fully rewritten** to make it more robust, better tested, and even more comfortable to work with. While most of the methods have similar signatures, there are a few major changes.
 
-Breaking changes:
+**Breaking changes:**
 
 * Method `translation_statuses` has been renamed to `custom_translation_statuses`
 * Method `translation_status` has been renamed to `custom_translation_status`
@@ -34,7 +34,7 @@ branch.name # => 'my-branch'
 branch[:name] # => 'my-branch'
 ```
 
-Updates:
+**Updates:**
 
 * Added many new instance methods like `update`, `destroy`, and `reload_data`.
 
@@ -70,6 +70,8 @@ response[:screenshot_deleted] # => true
 ```
 
 * Test only with Ruby 3+ (though the SDK should still work with version 2.7+). Next major version will require Ruby 3+.
+* Use WebMock for testing instead of VCR
+* Use faraday-gzip version 2 and zlib version 3
 
 ## 7.2.0 (11-Jan-2023)
 
diff --git a/lib/ruby_lokalise_api/concerns/attrs_loadable.rb b/lib/ruby_lokalise_api/concerns/attrs_loadable.rb
index 2ec1ed7..aeb3f1a 100644
--- a/lib/ruby_lokalise_api/concerns/attrs_loadable.rb
+++ b/lib/ruby_lokalise_api/concerns/attrs_loadable.rb
@@ -2,6 +2,7 @@
 
 module RubyLokaliseApi
   module Concerns
+    # Allows to set supported attributes for classes
     module AttrsLoadable
       class << self
         def extended(klass)
diff --git a/lib/ruby_lokalise_api/connection.rb b/lib/ruby_lokalise_api/connection.rb
index 1e7f3d8..719acbe 100644
--- a/lib/ruby_lokalise_api/connection.rb
+++ b/lib/ruby_lokalise_api/connection.rb
@@ -3,7 +3,6 @@
 module RubyLokaliseApi
   # Module to setup connection using Faraday
   module Connection
-
     # Creates a new Faraday object with specified params
     def connection(endpoint)
       Faraday.new(options(endpoint), request_params_for(endpoint.client)) do |faraday|
diff --git a/lib/ruby_lokalise_api/oauth2/auth.rb b/lib/ruby_lokalise_api/oauth2/auth.rb
index bdf4efb..b80bd32 100644
--- a/lib/ruby_lokalise_api/oauth2/auth.rb
+++ b/lib/ruby_lokalise_api/oauth2/auth.rb
@@ -2,6 +2,7 @@
 
 module RubyLokaliseApi
   module OAuth2
+    # This class defines OAuth2 flow
     class Auth
       attr_reader :client_id, :client_secret, :timeout, :open_timeout
 
@@ -14,10 +15,17 @@ def initialize(client_id, client_secret, params = {})
         @open_timeout = params[:open_timeout]
       end
 
+      # Returns OAuth2 endpoint URI
       def oauth2_endpoint
         self.class.const_get(:OAUTH2_ENDPOINT)
       end
 
+      # Builds an OAuth2 link that customers have to visit
+      # in order to obtain a special code
+      # @return [String]
+      # @param scope [Array, String]
+      # @param redirect_uri [String]
+      # @param state [String]
       def auth(scope:, redirect_uri: nil, state: nil)
         get_params = {
           client_id: client_id,
@@ -29,6 +37,10 @@ def auth(scope:, redirect_uri: nil, state: nil)
         oauth2_endpoint.new(self, query: 'auth', get: get_params).full_uri
       end
 
+      # Requests OAuth2 access token. Requires OAuth2 code obtained
+      # using the `.auth` method
+      # @return [RubyLokaliseApi::Resources::OAuth2Token]
+      # @param code [String]
       def token(code)
         endpoint = oauth2_endpoint.new(
           self,
@@ -42,6 +54,9 @@ def token(code)
         RubyLokaliseApi::Resources::OAuth2Token.new endpoint.do_post
       end
 
+      # Refreshes expired OAuth2 access token.
+      # @return [RubyLokaliseApi::Resources::OAuth2RefreshedToken]
+      # @param refresh_token [String]
       def refresh(refresh_token)
         endpoint = oauth2_endpoint.new(
           self,
diff --git a/lib/ruby_lokalise_api/utils/classes.rb b/lib/ruby_lokalise_api/utils/classes.rb
index f02cd33..a28efa9 100644
--- a/lib/ruby_lokalise_api/utils/classes.rb
+++ b/lib/ruby_lokalise_api/utils/classes.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 module RubyLokaliseApi
+  # Basic utilitiy methods
   module Utils
     module Classes
       refine Object do
@@ -9,10 +10,13 @@ def base_name
           name.split('::').last
         end
 
+        # Converts object to array unless it is already an array
         def to_array
           is_a?(Array) ? self : [self]
         end
 
+        # Converts object to array and then places this array
+        # inside hash under the provided key
         def to_array_obj(key)
           return self if is_a?(Hash) && (key?(key) || key?(key.to_s))
 
diff --git a/lib/ruby_lokalise_api/utils/keys.rb b/lib/ruby_lokalise_api/utils/keys.rb
index d5ea41c..f7f242e 100644
--- a/lib/ruby_lokalise_api/utils/keys.rb
+++ b/lib/ruby_lokalise_api/utils/keys.rb
@@ -5,6 +5,8 @@ module Utils
     module Keys
       using RubyLokaliseApi::Utils::Strings
 
+      # Reads DATA_KEY for resources. DATA_KEY specifies the name of the key
+      # in the API response that contains the actual data
       def data_key_for(klass:)
         key = if Module.const_defined? "RubyLokaliseApi::Resources::#{klass}::DATA_KEY"
                 Module.const_get "RubyLokaliseApi::Resources::#{klass}::DATA_KEY"
@@ -15,6 +17,8 @@ def data_key_for(klass:)
         key.snakecase
       end
 
+      # Reads DATA_KEY for collections. DATA_KEY specifies the name of the key
+      # in the API response that contains the actual data
       def collection_key_for(klass:)
         key = if Module.const_defined?("RubyLokaliseApi::Collections::#{klass}::DATA_KEY")
                 Module.const_get("RubyLokaliseApi::Collections::#{klass}::DATA_KEY")
diff --git a/lib/ruby_lokalise_api/utils/loaders.rb b/lib/ruby_lokalise_api/utils/loaders.rb
index 3f5833f..59705f0 100644
--- a/lib/ruby_lokalise_api/utils/loaders.rb
+++ b/lib/ruby_lokalise_api/utils/loaders.rb
@@ -5,16 +5,19 @@ module Utils
     module Loaders
       private
 
+      # Instantiates an endpoint
       def endpoint(name:, client: self, params: {})
         klass = RubyLokaliseApi.const_get "Endpoints::#{name}Endpoint"
         klass.new client, params
       end
 
+      # Instantiates a resource
       def resource(name, data)
         klass = RubyLokaliseApi.const_get "Resources::#{name}"
         klass.new data
       end
 
+      # Instantiates a collection
       def collection(name, data)
         klass = RubyLokaliseApi.const_get "Collections::#{name}"
         klass.new data
diff --git a/lib/ruby_lokalise_api/version.rb b/lib/ruby_lokalise_api/version.rb
index 48056b5..2eadb07 100644
--- a/lib/ruby_lokalise_api/version.rb
+++ b/lib/ruby_lokalise_api/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module RubyLokaliseApi
-  VERSION = '8.0.0.rc1'
+  VERSION = '8.0.0'
 end
diff --git a/ruby-lokalise-api.gemspec b/ruby-lokalise-api.gemspec
index f8cabf9..75cf29b 100644
--- a/ruby-lokalise-api.gemspec
+++ b/ruby-lokalise-api.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency 'addressable',                     '~> 2.5'
   spec.add_dependency 'faraday',                         '~> 2.0'
-  spec.add_dependency 'faraday-gzip',                    '>= 0.1', '< 2.0'
+  spec.add_dependency 'faraday-gzip',                    '~> 2.0'
   spec.add_dependency 'json',                            '~> 2'
   spec.add_dependency 'zeitwerk',                        '~> 2.4'
 
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index de0467a..9d9eee0 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -33,6 +33,5 @@
 
   config.before(:suite) do
     Fixtures.eager_load
-    WebMock.allow_net_connect!
   end
 end