diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 01922195..a509ab8c 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -41,17 +41,8 @@ jobs:
           - 'false'
         db:
           - postgresql
-          - mysql
           - sqlite3
         exclude:
-          - db: mysql
-            ruby_version: '3.0'
-          - db: mysql
-            ruby_version: '3.2'
-          - db: mysql
-            ruby_version: '3.4'
-          - db: mysql
-            concurrent_ruby_ext: 'true'
           - db: sqlite3
             ruby_version: '3.0'
           - db: sqlite3
@@ -76,13 +67,7 @@ jobs:
         ports: ['5432:5432']
         options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
         env:
-          POSTGRES_DB: travis_ci_test
-      mariadb:
-        image: mariadb:10
-        ports: ['3306:3306']
-        env:
-          MYSQL_ALLOW_EMPTY_PASSWORD: 'yes'
-          MYSQL_DATABASE: travis_ci_test
+          POSTGRES_DB: ci_test
       redis:
         image: redis:latest
         ports: ['6379:6379']
diff --git a/Dockerfile b/Dockerfile
index deed0c63..1c5027ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,4 +6,4 @@ ADD Gemfile /data/
 ADD dynflow.gemspec /data/
 ADD lib/dynflow/version.rb /data/lib/dynflow/version.rb
 WORKDIR /data
-RUN bundle install --without mysql
+RUN bundle install
diff --git a/Gemfile b/Gemfile
index b27109d5..68c43955 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,10 +22,6 @@ group :postgresql, optional: ENV.key?('CI') && ENV['DB'] != 'postgresql' do
   gem "pg"
 end
 
-group :mysql, optional: ENV.key?('CI') && ENV['DB'] != 'mysql' do
-  gem "mysql2"
-end
-
 group :lint do
   gem 'theforeman-rubocop', '~> 0.0.4'
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 920d1056..904d749e 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -118,10 +118,8 @@ def self.persistence_adapter
     @persistence_adapter ||= begin
                                db_config = ENV.fetch('DB_CONN_STRING') do
                                  case ENV['DB']
-                                 when 'mysql'
-                                   "mysql2://root@127.0.0.1/#{ENV.fetch('MYSQL_DATABASE', 'travis_ci_test')}"
                                  when 'postgresql'
-                                   "postgres://postgres@localhost/#{ENV.fetch('POSTGRES_DB', 'travis_ci_test')}"
+                                   "postgres://postgres@localhost/#{ENV.fetch('POSTGRES_DB', 'ci_test')}"
                                  else
                                    'sqlite:/'
                                  end