diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..29e83da
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,49 @@
+name: Build Book
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 2.7
+      - run: bundle install
+      - run: rake build:CI
+      - uses: actions/github-script@v2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const fs = require('fs').promises;
+
+            const { repo: { owner, repo }, sha } = context;
+
+            const release = await github.repos.createRelease({
+              owner, repo,
+              tag_name: `v6.${process.env.GITHUB_RUN_NUMBER}`,
+              draft: true,
+              target_commitish: sha
+            });
+
+            console.log('A release has been created');
+            const build_dir = 'build';
+
+            for (let file of await fs.readdir(build_dir)) {
+              if (file == '.gitkeep') continue;
+              console.log('uploading', file);
+              await github.repos.uploadReleaseAsset({
+                owner, repo,
+                release_id: release.data.id,
+                name: file,
+                data: await fs.readFile(`${build_dir}/${file}`)
+              });
+            }
+            console.log('DONE')
diff --git a/Gemfile b/Gemfile
index 7eb5b30..af2fba8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -11,4 +11,5 @@ gem "asciidoctor-pdf", "~> 1.5.beta.7"
 gem "concurrent-ruby", "~> 1.1"
 gem "rouge", "~> 3.3"
 gem "asciidoctor-epub3", "~> 1.5.alpha.9"
-gem "kindlegen", "~> 3.0"
+# TODO: uncomment when issue(https://github.com/tdtds/kindlegen/issues/42) solved
+# gem "kindlegen", "~> 3.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index 3278874..fadb317 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -6,12 +6,11 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     afm (0.2.2)
     asciidoctor (2.0.10)
-    asciidoctor-epub3 (1.5.0.alpha.9)
-      asciidoctor (>= 1.5.0, < 3.0.0)
-      concurrent-ruby (~> 1.1.5)
-      gepub (~> 1.0.2)
-      thread_safe (~> 0.3.6)
-    asciidoctor-pdf (1.5.0.rc.2)
+    asciidoctor-epub3 (1.5.0.alpha.18)
+      asciidoctor (>= 1.5.6, < 3.0.0)
+      gepub (~> 1.0.0)
+      mime-types (~> 3.0)
+    asciidoctor-pdf (1.5.3)
       asciidoctor (>= 1.5.3, < 3.0.0)
       concurrent-ruby (~> 1.1.0)
       prawn (~> 2.2.0)
@@ -21,20 +20,20 @@ GEM
       prawn-templates (~> 0.1.0)
       safe_yaml (~> 1.0.0)
       thread_safe (~> 0.3.0)
-      treetop (~> 1.5.0)
+      treetop (~> 1.6.0)
       ttfunk (~> 1.5.0, >= 1.5.1)
-    concurrent-ruby (1.1.5)
+    concurrent-ruby (1.1.7)
     css_parser (1.7.1)
       addressable
-    gepub (1.0.7)
+    gepub (1.0.11)
       nokogiri (>= 1.8.2, < 1.11)
-      rubyzip (> 1.1.1, < 2.1)
+      rubyzip (> 1.1.1, < 2.3)
     hashery (2.1.2)
-    kindlegen (3.0.5)
-      rake
-      rubyzip
+    mime-types (3.3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2020.0512)
     mini_portile2 (2.4.0)
-    nokogiri (1.10.8)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     pdf-core (0.7.0)
     pdf-reader (2.4.0)
@@ -57,14 +56,13 @@ GEM
     prawn-templates (0.1.2)
       pdf-reader (~> 2.0)
       prawn (~> 2.2)
-    public_suffix (4.0.3)
-    rake (13.0.1)
-    rouge (3.14.0)
+    public_suffix (4.0.5)
+    rouge (3.22.0)
     ruby-rc4 (0.1.5)
-    rubyzip (2.0.0)
+    rubyzip (2.2.0)
     safe_yaml (1.0.5)
     thread_safe (0.3.6)
-    treetop (1.5.3)
+    treetop (1.6.10)
       polyglot (~> 0.3)
     ttfunk (1.5.1)
 
@@ -76,8 +74,7 @@ DEPENDENCIES
   asciidoctor-epub3 (~> 1.5.alpha.9)
   asciidoctor-pdf (~> 1.5.beta.7)
   concurrent-ruby (~> 1.1)
-  kindlegen (~> 3.0)
   rouge (~> 3.3)
 
 BUNDLED WITH
-   1.17.3
+   2.1.4
diff --git a/Rakefile b/Rakefile
index 71e8100..8eef811 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,5 +1,6 @@
 require 'asciidoctor'
 require 'asciidoctor-pdf'
+require 'yaml'
 
 LANGS = %w[en fr es].freeze
 VERSIONS = %w[5 6].freeze
@@ -10,13 +11,13 @@ FONTS_DIR = File.join __dir__, 'fonts'
 def check_args(args)
   lang = args[:lang]
   unless LANGS.include?(lang)
-    msg = format('Lang not availaible. Select on of theses langs: %s', LANGS.join(', '))
+    msg = format('Lang not available. Select on of these langs: %s', LANGS.join(', '))
     raise ArgumentError, msg
   end
 
   version = args[:version]
   unless VERSIONS.include?(version)
-    msg = format('Version not availaible. Select on of theses versions: %s', VERSIONS.join(', '))
+    msg = format('Version not available. Select on of these versions: %s', VERSIONS.join(', '))
     raise ArgumentError, msg
   end
 
@@ -32,6 +33,23 @@ def out_filename(args, extension)
 end
 
 namespace :build do
+  desc 'Build for all versions, languages'
+  task :CI do
+    builds = YAML.load(File.read("builds.yaml"))
+    builds.entries.each do |version, languages|
+      languages.each do |language|
+        puts "VERSION: #{version} - LANG: #{language}"
+        args = { version: version, lang: language }
+        Rake::Task['build:pdf'].execute(args)
+        Rake::Task['build:html'].execute(args)
+        Rake::Task['build:epub'].execute(args)
+        # [temporary] no mobi build
+        # TODO: fix when issue(https://github.com/tdtds/kindlegen/issues/42) solved
+        # Rake::Task['build:mobi'].execute(args)
+      end
+    end
+  end
+
   desc 'Build all versions'
   task :all, [:version, :lang] do |_task, args|
     check_args(args)
diff --git a/builds.yaml b/builds.yaml
new file mode 100644
index 0000000..a4aae12
--- /dev/null
+++ b/builds.yaml
@@ -0,0 +1,2 @@
+5: [en, fr]
+6: [en, es, fr]