diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index c845ea722..000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,152 +0,0 @@
-version: 2.1
-
-commands:
-  setup-env:
-    description: Sets up the testing environment
-    steps:
-      - run:
-          name: Install OS packages
-          command: apk add git build-base ruby-dev ruby-etc ruby-json libsodium
-      - checkout
-      - run:
-          name: "Ruby version"
-          command: |
-            ruby -v
-            echo $RUBY_VERSION > ruby_version.txt
-      - restore_cache:
-          keys:
-            - bundle-cache-v1-{{ checksum "ruby_version.txt" }}-{{ .Branch }}-{{ checksum "Gemfile" }}-{{ checksum "discordrb.gemspec" }}
-            - bundle-cache-v1-{{ checksum "ruby_version.txt" }}-{{ .Branch }}
-            - bundle-cache-v1-{{ checksum "ruby_version.txt" }}
-      - run:
-          name: Install dependencies
-          command: bundle install --path vendor/bundle
-      - save_cache:
-          key: bundle-cache-v1-{{ checksum "ruby_version.txt" }}-{{ .Branch }}-{{ checksum "Gemfile" }}-{{ checksum "discordrb.gemspec" }}
-          paths:
-            - ./vendor/bundle
-
-jobs:
-  test_ruby_27:
-    docker:
-      - image: ruby:2.7-alpine
-    steps:
-      - setup-env
-      - run:
-          name: Run RSpec
-          command: bundle exec rspec --format progress --format RspecJunitFormatter -o ~/rspec/rspec.xml
-      - store_test_results:
-          path: ~/rspec
-
-  test_ruby_30:
-    docker:
-      - image: ruby:3.0-alpine
-    steps:
-      - setup-env
-      - run:
-          name: Run RSpec
-          command: bundle exec rspec --format progress --format RspecJunitFormatter -o ~/rspec/rspec.xml
-      - store_test_results:
-          path: ~/rspec
-
-
-  test_ruby_31:
-    docker:
-      - image: ruby:3.1-alpine
-    steps:
-      - setup-env
-      - run:
-          name: Run RSpec
-          command: bundle exec rspec --format progress --format RspecJunitFormatter -o ~/rspec/rspec.xml
-
-  rubocop:
-    docker:
-      - image: ruby:2.7-alpine
-    steps:
-      - setup-env
-      - run:
-          name: Run Rubocop
-          command: bundle exec rubocop
-
-  yard:
-    docker:
-      - image: ruby:2.7-alpine
-    steps:
-      - setup-env
-      - attach_workspace:
-          at: /tmp/workspace
-      - run:
-          name: Run YARD
-          command: bundle exec yard --output-dir /tmp/workspace/docs
-      - persist_to_workspace:
-          root: /tmp/workspace
-          paths:
-            - docs
-
-  pages:
-    docker:
-      - image: alpine
-    steps:
-      - run:
-          name: Install OS packages
-          command: apk add git openssh-client-default
-      - attach_workspace:
-          at: /tmp/workspace
-      - run:
-          name: Clone docs
-          command: |
-            mkdir -p ~/.ssh
-
-            echo 'github.com ssh-rsa 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' >> ~/.ssh/known_hosts
-
-            git clone $CIRCLE_REPOSITORY_URL -b gh-pages .
-      - add_ssh_keys:
-          fingerprints:
-            - "9a:4c:50:94:23:46:81:74:41:97:87:04:4e:59:4b:4e"
-      - run:
-          name: Push updated docs
-          command: |
-            git config user.name "Circle CI"
-            git config user.email "ci-build@shardlab.dev"
-
-            SOURCE_BRANCH=$CIRCLE_BRANCH
-            if [ -n "$CIRCLE_TAG" ]; then
-              SOURCE_BRANCH=$CIRCLE_TAG
-            fi
-
-            mkdir -p $SOURCE_BRANCH
-            rm -rf $SOURCE_BRANCH/*
-            cp -r /tmp/workspace/docs/. ./$SOURCE_BRANCH/
-
-            git add $SOURCE_BRANCH
-            git commit --allow-empty -m "[skip ci] Deploy docs"
-            git push -u origin gh-pages
-
-workflows:
-  test:
-    jobs:
-      - test_ruby_27
-      - test_ruby_30
-      - test_ruby_31
-      - rubocop
-      - yard
-  deploy:
-    jobs:
-      - yard:
-          filters:
-            branches:
-              only:
-                - main
-                - slash_commands
-            tags:
-              only: /^v.*/
-      - pages:
-          requires:
-            - yard
-          filters:
-            branches:
-              only:
-                - main
-                - slash_commands
-            tags:
-              only: /^v.*/
diff --git a/.github/workflows/github-pages.yml b/.github/workflows/github-pages.yml
new file mode 100644
index 000000000..a9def4743
--- /dev/null
+++ b/.github/workflows/github-pages.yml
@@ -0,0 +1,65 @@
+name: "Github Pages"
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - v*
+
+jobs:
+  pages:
+    name: Github Pages
+    runs-on: ubuntu-latest
+    env:
+      api-dir: ./
+
+    strategy:
+      fail-fast: false
+
+    steps:
+      - name: Checkout repository for Yard
+        uses: actions/checkout@v3
+        with:
+          path: discordrb_docs
+
+      - name: Install OS package
+        run: |
+          sudo apt update
+          sudo apt install -y git openssh-client
+
+      - name: Setup Ruby 2.7
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '2.7'
+          bundler-cache: true
+
+      - name: Checkout repository for Github Pages
+        uses: actions/checkout@v3
+        with:
+          path: discordrb_gh
+          ref: gh-pages
+
+      - name: Run bundle install
+        working-directory: ${{env.api-dir}}
+        run: |
+          gem install bundler
+          BUNDLE_GEMFILE=discordrb_docs/Gemfile bundle install --jobs 4 --retry 3
+
+      - name: Generate Yard docs
+        working-directory: ${{env.api-dir}}
+        run: |
+          cd discordrb_docs
+          bundle exec yard --output-dir /tmp/docs
+
+      - name: Commit & Push docs
+        run: |
+          cd discordrb_gh
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git config user.name "github-actions[bot]"
+          mkdir -p $GITHUB_REF_NAME
+          rm -rf $GITHUB_REF_NAME/*
+          cp -r /tmp/docs/. $GITHUB_REF_NAME
+          git add $GITHUB_REF_NAME
+          git commit --allow-empty -m "[skip ci] Deploy docs"
+          git push
diff --git a/.github/workflows/rspec.yml b/.github/workflows/rspec.yml
new file mode 100644
index 000000000..3103db5f8
--- /dev/null
+++ b/.github/workflows/rspec.yml
@@ -0,0 +1,53 @@
+name: "RSpec"
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  rspec:
+    name: RSpec
+    runs-on: ubuntu-latest
+    env:
+      api-dir: ./
+
+    strategy:
+      fail-fast: false
+      matrix:
+        versions: [ '2.7', '3.0', '3.1', '3.2', '3.3' ]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Setup libraries
+      run: |
+        sudo apt update
+        sudo apt install -y libsodium-dev
+
+    - name: Setup Ruby ${{ matrix.versions }}
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.versions }}
+        bundler-cache: true
+
+    - name: Run bundle install (Ruby ${{ matrix.versions }})
+      working-directory: ${{env.api-dir}}
+      run: |
+        gem install bundler
+        bundle install --jobs 4 --retry 3
+
+    - name: RSpec spec (Ruby ${{ matrix.versions }})
+      working-directory: ${{env.api-dir}}
+      run: bundle exec rspec spec --format progress --format RspecJunitFormatter -o ~/rspec/rspec.xml
+
+    - name: Save test results (Ruby ${{ matrix.versions }})
+      uses: actions/upload-artifact@v3
+      with:
+        name: rspec_results_${{ matrix.versions }}
+        path: ~/rspec/rspec.xml
+        retention-days: 30
diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
new file mode 100644
index 000000000..bf1634633
--- /dev/null
+++ b/.github/workflows/rubocop.yml
@@ -0,0 +1,39 @@
+name: "RuboCop"
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  rubocop:
+    name: RuboCop
+    runs-on: ubuntu-latest
+    env:
+      api-dir: ./
+
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Setup Ruby 2.7
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '2.7'
+        bundler-cache: true
+
+    - name: Run bundle install
+      working-directory: ${{env.api-dir}}
+      run: |
+        gem install bundler
+        bundle install --jobs 4 --retry 3
+
+    - name: RuboCop checks
+      working-directory: ${{env.api-dir}}
+      run: bundle exec rubocop
diff --git a/.github/workflows/yard.yml b/.github/workflows/yard.yml
new file mode 100644
index 000000000..1b7cea63f
--- /dev/null
+++ b/.github/workflows/yard.yml
@@ -0,0 +1,51 @@
+name: "Yard"
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  yard:
+    name: Yard
+    runs-on: ubuntu-latest
+    env:
+      api-dir: ./
+
+    strategy:
+      fail-fast: false
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Setup Ruby 2.7
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '2.7'
+        bundler-cache: true
+
+    - name: Run bundle install
+      working-directory: ${{env.api-dir}}
+      run: |
+        gem install bundler
+        bundle install --jobs 4 --retry 3
+
+    - name: Generate Yard docs
+      working-directory: ${{env.api-dir}}
+      run: bundle exec yard --output-dir /tmp/docs
+
+    - name: Compress docs to prevent error 429
+      run: |
+        cd /tmp/docs
+        tar -cvf /tmp/docs.tar .
+
+    - name: Keep temporary the generated docs
+      uses: actions/upload-artifact@v3
+      with:
+        name: docs_${{ github.run_number }}
+        path: /tmp/docs.tar
+        retention-days: 30
diff --git a/README.md b/README.md
index b492a372f..5dc2196e5 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,10 @@
 
 [![Gem](https://img.shields.io/gem/v/discordrb.svg)](https://rubygems.org/gems/discordrb)
 [![Gem](https://img.shields.io/gem/dt/discordrb.svg)](https://rubygems.org/gems/discordrb)
-[![CircleCI](https://circleci.com/gh/shardlab/discordrb.svg?style=svg)](https://circleci.com/gh/shardlab/discordrb)
-[![Inline docs](https://inch-ci.org/github/shardlab/discordrb.svg?branch=main)](https://drb.shardlab.dev/v3.4.0/)
+[![Gem](https://img.shields.io/badge/docs-v3.5.0-979797.svg)](https://drb.shardlab.dev/v3.5.0/)
+[![Github Actions Rspec](https://github.com/shardlab/discordrb/actions/workflows/rspec.yml/badge.svg?branch=main&event=push)](https://github.com/shardlab/discordrb/actions/workflows/rspec.yml)
+[![Github Actions Rubocop](https://github.com/shardlab/discordrb/actions/workflows/rubocop.yml/badge.svg?branch=main&event=push)](https://github.com/shardlab/discordrb/actions/workflows/rubocop.yml)
+[![Inline docs](https://img.shields.io/badge/docs-main-979797.svg)](https://drb.shardlab.dev/main/)
 [![Join Discord](https://img.shields.io/badge/discord-join-7289DA.svg)](https://discord.gg/cyK3Hjm)
 
 An implementation of the [Discord](https://discord.com/) API using Ruby.
@@ -19,7 +21,7 @@ An implementation of the [Discord](https://discord.com/) API using Ruby.
 - [Development](https://github.com/shardlab/discordrb#development), [Contributing](https://github.com/shardlab/discordrb#contributing)
 - [License](https://github.com/shardlab/discordrb#license)
 
-See also: [Documentation](https://drb.shardlab.dev/v3.4.0/), [Tutorials](https://github.com/shardlab/discordrb/wiki)
+See also: [Documentation](https://drb.shardlab.dev/v3.5.0/), [Tutorials](https://github.com/shardlab/discordrb/wiki)
 
 ## Introduction
 
@@ -67,6 +69,13 @@ gem 'discordrb'
 
 And then install via `bundle install`.
 
+_If you want to run the latest code instead, use this gem line instead:_
+```ruby
+gem 'discordrb', github: 'shardlab/discordrb', branch: 'main'
+```
+
+⚠️ **Note that main may contain breaking changes or other unstable code !**
+
 Run the [ping example](https://github.com/shardlab/discordrb/blob/main/examples/ping.rb) to verify that the installation works (make sure to replace the token and client ID in there with your bots'!):
 
 To run the bot while using bundler:
@@ -131,7 +140,7 @@ If you've made an open source project on GitHub that uses discordrb, consider ad
 
 Also included is a webhooks client, which can be used as a separate gem `discordrb-webhooks`. This special client can be used to form requests to Discord webhook URLs in a high-level manner.
 
-- [`discordrb-webhooks` documentation](https://drb.shardlab.dev/v3.4.0/Discordrb/Webhooks.html)
+- [`discordrb-webhooks` documentation](https://drb.shardlab.dev/v3.5.0/Discordrb/Webhooks.html)
 - [More information about webhooks](https://support.discord.com/hc/en-us/articles/228383668-Intro-to-Webhooks)
 - [Embed visualizer tool](https://leovoel.github.io/embed-visualizer/) - Includes a discordrb code generator for forming embeds
 
diff --git a/discordrb.gemspec b/discordrb.gemspec
index 8867fd132..bba67e037 100644
--- a/discordrb.gemspec
+++ b/discordrb.gemspec
@@ -35,8 +35,8 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency 'bundler', '>= 1.10', '< 3'
   spec.add_development_dependency 'rake', '~> 13.0'
-  spec.add_development_dependency 'redcarpet', '~> 3.5.0' # YARD markdown formatting
-  spec.add_development_dependency 'rspec', '~> 3.11.0'
+  spec.add_development_dependency 'redcarpet', '~> 3.6.0' # YARD markdown formatting
+  spec.add_development_dependency 'rspec', '~> 3.12.0'
   spec.add_development_dependency 'rspec_junit_formatter', '~> 0.5.1'
   spec.add_development_dependency 'rspec-prof', '~> 0.0.7'
   spec.add_development_dependency 'rubocop', '~> 1.36.0'
diff --git a/examples/channel_overwrite.rb b/examples/channel_overwrite.rb
new file mode 100644
index 000000000..4723f577e
--- /dev/null
+++ b/examples/channel_overwrite.rb
@@ -0,0 +1,66 @@
+# frozen_string_literal: true
+
+require 'discordrb'
+require 'securerandom'
+
+CHANNEL_EDIT = ENV.fetch('CHANNEL_EDIT')
+ROLE_1       = ENV.fetch('ROLE_1')
+ROLE_2       = ENV.fetch('ROLE_2')
+
+bot = Discordrb::Bot.new(token: ENV.fetch('DISCORDRB_TOKEN'))
+
+bot.message do |event|
+  if event.message.content == 'DEFINE_OVERWRITE'
+    event.channel.send_message('Define overwrite in this channel')
+
+    allow = Discordrb::Permissions.new
+    allow.can_mention_everyone = true
+
+    overwrite = Discordrb::Overwrite.new(ROLE_1, type: 'role', allow: allow, deny: Discordrb::Permissions.new)
+
+    event.bot.channel(CHANNEL_EDIT, event.server).define_overwrite(overwrite)
+  end
+
+  if event.message.content == 'CHECK_OVERWRITE'
+    event.channel.send_message('Check overwrite in this channel')
+    puts(event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites.map { |_, v| "#{v.type} - #{v.id} - #{v.allow.bits} / #{v.deny.bits}" })
+  end
+
+  if event.message.content == 'DELETE_OVERWRITE'
+    event.channel.send_message('Delete overwrite in this channel')
+
+    event.bot.channel(CHANNEL_EDIT, event.server).delete_overwrite(ROLE_1)
+  end
+
+  if event.message.content == 'BULK_OVERWRITE'
+    event.channel.send_message('Bulk overwrite in this channel')
+
+    allow = Discordrb::Permissions.new
+    allow.can_mention_everyone = true
+
+    deny = Discordrb::Permissions.new
+    deny.can_mention_everyone = true
+
+    overwrites = []
+    overwrites << Discordrb::Overwrite.new(ROLE_1, type: 'role', allow: allow, deny: Discordrb::Permissions.new)
+    overwrites << Discordrb::Overwrite.new(ROLE_2, type: 'role', allow: Discordrb::Permissions.new, deny: deny)
+
+    event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites = overwrites
+    puts(event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites.map { |_, v| "#{v.type} - #{v.id} - #{v.allow.bits} / #{v.deny.bits}" })
+
+    # Bulk edit from permission_overwrites return values (this method return a Hash and not an Array)
+    event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites = event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites
+    puts(event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites.map { |_, v| "#{v.type} - #{v.id} - #{v.allow.bits} / #{v.deny.bits}" })
+
+    # Send nil to check if permission_overwrites not changed
+    event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites = nil
+    puts(event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites.map { |_, v| "#{v.type} - #{v.id} - #{v.allow.bits} / #{v.deny.bits}" })
+  end
+
+  if event.message.content == 'BULK_DELETE_OVERWRITE'
+    event.channel.send_message('Bulk delete overwrite in this channel')
+    event.bot.channel(CHANNEL_EDIT, event.server).permission_overwrites = []
+  end
+end
+
+bot.run
diff --git a/examples/webhooks.rb b/examples/webhooks.rb
index fa4e5584b..dc31f5957 100644
--- a/examples/webhooks.rb
+++ b/examples/webhooks.rb
@@ -26,7 +26,7 @@
 
   if event.message.content == 'EDIT_TWO'
     wh = event.channel.webhooks.first
-    wh.update(avatar: BASE64_SMALL_PICTURE, reason: 'Edition test two')
+    wh.update({ avatar: BASE64_SMALL_PICTURE, reason: 'Edition test two' })
 
     puts wh.inspect
     wh.execute(content: '[EDIT TWO]')
diff --git a/lib/discordrb/data/channel.rb b/lib/discordrb/data/channel.rb
index 4f442b7c8..5bd9f2368 100644
--- a/lib/discordrb/data/channel.rb
+++ b/lib/discordrb/data/channel.rb
@@ -341,7 +341,7 @@ def permission_overwrites(type = nil)
     alias_method :overwrites, :permission_overwrites
 
     # Bulk sets this channels permission overwrites
-    # @param overwrites [Array<Overwrite>]
+    # @param overwrites [Array<Overwrite>, Hash<Integer => Overwrite>]
     def permission_overwrites=(overwrites)
       update_channel_data(permission_overwrites: overwrites)
     end
@@ -965,7 +965,12 @@ def bulk_delete(ids, strict = false, reason = nil)
     def update_channel_data(new_data)
       new_nsfw = new_data[:nsfw].is_a?(TrueClass) || new_data[:nsfw].is_a?(FalseClass) ? new_data[:nsfw] : @nsfw
       # send permission_overwrite only when explicitly set
-      overwrites = new_data[:permission_overwrites] ? new_data[:permission_overwrites].map { |_, v| v.to_hash } : nil
+      overwrites = if new_data[:permission_overwrites].is_a?(Hash)
+                     new_data[:permission_overwrites]&.map { |_, v| v&.to_hash }
+                   else
+                     new_data[:permission_overwrites]&.map(&:to_hash)
+                   end
+
       response = JSON.parse(API::Channel.update(@bot.token, @id,
                                                 new_data[:name] || @name,
                                                 new_data[:topic] || @topic,
diff --git a/lib/discordrb/data/webhook.rb b/lib/discordrb/data/webhook.rb
index 3e2bb8260..cb5693649 100644
--- a/lib/discordrb/data/webhook.rb
+++ b/lib/discordrb/data/webhook.rb
@@ -86,7 +86,7 @@ def update(data)
       data[:avatar] = avatarise(data[:avatar]) if data.key?(:avatar)
       data[:channel_id] = data[:channel]&.resolve_id
       data.delete(:channel)
-      update_webhook(**data)
+      update_webhook(data)
     end
 
     # Deletes the webhook.
diff --git a/spec/data/channel_spec.rb b/spec/data/channel_spec.rb
index acbae6cda..e068df8bf 100644
--- a/spec/data/channel_spec.rb
+++ b/spec/data/channel_spec.rb
@@ -103,7 +103,7 @@
         allow(JSON).to receive(:parse)
         new_data = double('new data')
         allow(new_data).to receive(:[])
-        allow(new_data).to receive(:[]).with(:permission_overwrites).and_return(false)
+        allow(new_data).to receive(:[]).with(:permission_overwrites).and_return(nil)
         expect(Discordrb::API::Channel).to receive(:update).with(any_args, nil, anything)
         channel.__send__(:update_channel_data, new_data)
       end
diff --git a/spec/data/webhook_spec.rb b/spec/data/webhook_spec.rb
index d6c5a5a05..1f3aa6b49 100644
--- a/spec/data/webhook_spec.rb
+++ b/spec/data/webhook_spec.rb
@@ -101,7 +101,7 @@
 
   describe '#update' do
     it 'calls update_webhook' do
-      expect(webhook).to receive(:update_webhook).with(avatar: avatar_string, channel_id: edited_webhook_channel_id.to_i, name: edited_webhook_name, reason: reason)
+      expect(webhook).to receive(:update_webhook).with(hash_including(avatar: avatar_string, channel_id: edited_webhook_channel_id.to_i, name: edited_webhook_name, reason: reason))
       webhook.update(avatar: avatar_string, channel: edited_webhook_channel_id, name: edited_webhook_name, reason: reason)
     end
   end