diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6be3d0a..0d0dcb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+## 19 February 2023
+
+- Add shoulda-matchers gem and its configuration
+
 ## 14 February 2023
 
 - Add gitlab-ci.yml file
diff --git a/Gemfile b/Gemfile
index 60b56d0..f06408e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -99,6 +99,7 @@ group :test do
   gem 'database_cleaner-active_record'
   gem 'factory_bot_rails'
   gem 'faker'
+  gem 'shoulda-matchers'
   # RSpec matchers for JSON API.
   gem 'jsonapi-rspec'
   gem 'selenium-webdriver'
diff --git a/Gemfile.lock b/Gemfile.lock
index 3597010..4203cc2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -320,6 +320,8 @@ GEM
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
     sexp_processor (4.16.1)
+    shoulda-matchers (5.3.0)
+      activesupport (>= 5.2.0)
     sidekiq (7.0.3)
       concurrent-ruby (< 2)
       connection_pool (>= 2.3.0)
@@ -412,6 +414,7 @@ DEPENDENCIES
   rubocop-rails
   rubocop-rspec
   selenium-webdriver
+  shoulda-matchers
   sidekiq
   simplecov
   tzinfo-data
diff --git a/README.md b/README.md
index 80b5122..1cfb7a1 100644
--- a/README.md
+++ b/README.md
@@ -63,6 +63,7 @@ You can see a list of gems that are in the project with a link to their commit.
 - 14- [Redis](https://redis.io/) ([commit](https://github.com/zakariaf/rails-base-app/commit/3d6bd4194c3a992c838093bb8c8c7332784cffba), [PR](https://github.com/zakariaf/rails-base-app/pull/20))
 - 15- [Sidekiq](https://github.com/mperham/sidekiq) ([commit](https://github.com/zakariaf/rails-base-app/commit/f7b759d9d42ce3444a04978fe2cbfc66cd120250), [PR](https://github.com/zakariaf/rails-base-app/pull/22))
 - 16- [dotenv](https://github.com/bkeepers/dotenv) ([commit](https://github.com/zakariaf/rails-base-app/commit/3aaa696c4228aac2dac40ff42591f07dc74a62bb))
+- 28- [shoulda-matchers]() ([PR] (https://github.com/zakariaf/rails-base-app/pull/34))
 
 ### Front-end
 
diff --git a/spec/support/shoulda_matchers.rb b/spec/support/shoulda_matchers.rb
new file mode 100644
index 0000000..edcf9dd
--- /dev/null
+++ b/spec/support/shoulda_matchers.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+Shoulda::Matchers.configure do |config|
+  config.integrate do |with|
+    with.test_framework :rspec
+    with.library :rails
+  end
+end