diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
index 88bf2116fe..a1a417a5c7 100644
--- a/.github/workflows/rubocop.yml
+++ b/.github/workflows/rubocop.yml
@@ -12,6 +12,7 @@ jobs:
         with:
           ruby-version: 2.5.8
       - run: 'gem install activesupport -v 6.1.4.4'
+      - run: 'gem install rubocop-ast -v 1.17.0'
       - name: Rubocop linter
         uses: reviewdog/action-rubocop@v1
         with:
diff --git a/Gemfile b/Gemfile
index 89cd388324..d47620a288 100644
--- a/Gemfile
+++ b/Gemfile
@@ -122,7 +122,6 @@ group :development, :test do
   gem 'rack'
   gem 'rb-readline'
   gem 'rubocop', '~> 1.12.0', require: false
-  gem 'rubocop-ast', '<= 1.17.0', require: false
   gem 'rubocop-performance', require: false
   gem 'rubocop-rails', require: false
   gem 'rubocop-rspec', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index 72b58fd8e9..bdd12d1cb9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -591,7 +591,6 @@ DEPENDENCIES
   rqrcode (~> 0.10.1)
   rspec-rails (= 2.12.0)
   rubocop (~> 1.12.0)
-  rubocop-ast (<= 1.17.0)
   rubocop-performance
   rubocop-rails
   rubocop-rspec