diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
new file mode 100644
index 0000000..4a91e36
--- /dev/null
+++ b/.github/workflows/ruby.yml
@@ -0,0 +1,24 @@
+name: Ruby
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        ruby-version: ['2.7', '3.0', '3.1', '3.2']
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: ${{ matrix.ruby-version }}
+        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+    - name: Run tests
+      run: bundle exec rspec
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 3756708..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-language: ruby
-rvm:
-  - 2.3
-  - 2.4
-  - 2.5
-  - 2.6
-  - 3.2
-script: bundle exec rspec
diff --git a/README.md b/README.md
index 94de091..d328060 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,7 @@
 
 Omniauth strategy for using Citadele as an authentication service provider.
 
-[![Build Status](https://travis-ci.org/mitigate-dev/omniauth-citadele.svg?branch=master)](https://travis-ci.org/mitigate-dev/omniauth-citadele)
-
-Supported Ruby versions: 2.3+
+Supported Ruby versions: 2.7+
 
 ## Related projects
 
diff --git a/omniauth-citadele.gemspec b/omniauth-citadele.gemspec
index 785570b..edb89b1 100644
--- a/omniauth-citadele.gemspec
+++ b/omniauth-citadele.gemspec
@@ -18,16 +18,17 @@ Gem::Specification.new do |spec|
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 2.3.0'
+  spec.required_ruby_version = '>= 2.7'
 
   spec.add_runtime_dependency 'omniauth', '~> 2.1'
   spec.add_runtime_dependency 'i18n'
 
-  spec.add_development_dependency 'rack', '~> 2.0'
+  spec.add_development_dependency 'rack'
   spec.add_development_dependency 'rack-test'
   spec.add_development_dependency 'rspec'
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'rake'
+  spec.add_development_dependency 'rack-session'
 
   spec.add_dependency 'xmldsig'
   spec.add_dependency 'nokogiri'
diff --git a/spec/omniauth/strategies/citadele_spec.rb b/spec/omniauth/strategies/citadele_spec.rb
index 103a13f..5e12fcf 100644
--- a/spec/omniauth/strategies/citadele_spec.rb
+++ b/spec/omniauth/strategies/citadele_spec.rb
@@ -1,5 +1,6 @@
 require 'spec_helper'
 require 'rack-protection'
+require 'rack/session'
 
 describe OmniAuth::Strategies::Citadele do
   PRIVATE_KEY = File.read(File.join(RSpec.configuration.cert_folder, 'request.key'))
@@ -7,7 +8,7 @@
   PUBLIC_CRT = File.read(File.join(RSpec.configuration.cert_folder, 'response.crt'))
 
   let(:app){ Rack::Builder.new do |b|
-    b.use Rack::Session::Cookie, {secret: 'abc123'}
+    b.use Rack::Session::Cookie, {secret: '5242e6bd9daf0e9645c2d4e22b11ba8cee0bed44439906d5f1bd5dad409d8637'}
     b.use(OmniAuth::Strategies::Citadele, PRIVATE_KEY, PRIVATE_CRT, PUBLIC_CRT, 'MY_FROM')
     b.run lambda{|env| [404, {}, ['Not Found']]}
   end.to_app }
@@ -87,7 +88,7 @@
 
     context 'with custom options' do
       let(:app){ Rack::Builder.new do |b|
-        b.use Rack::Session::Cookie, {secret: 'abc123'}
+        b.use Rack::Session::Cookie, {secret: '5242e6bd9daf0e9645c2d4e22b11ba8cee0bed44439906d5f1bd5dad409d8637'}
         b.use(OmniAuth::Strategies::Citadele, PRIVATE_KEY, PRIVATE_CRT, PUBLIC_CRT, 'MY_FROM',
           site: 'https://test.lv/banklink')
         b.run lambda{|env| [404, {}, ['Not Found']]}
@@ -101,7 +102,7 @@
 
     context 'with non-existant private key file' do
       let(:app){ Rack::Builder.new do |b|
-        b.use Rack::Session::Cookie, {secret: 'abc123'}
+        b.use Rack::Session::Cookie, {secret: '5242e6bd9daf0e9645c2d4e22b11ba8cee0bed44439906d5f1bd5dad409d8637'}
         b.use(OmniAuth::Strategies::Citadele, 'missing-private-key-file.pem', PRIVATE_CRT, PUBLIC_CRT, 'MY_FROM')
         b.run lambda{|env| [404, {}, ['Not Found']]}
       end.to_app }
@@ -115,7 +116,7 @@
 
     context 'with non-existant private certificate file' do
       let(:app){ Rack::Builder.new do |b|
-        b.use Rack::Session::Cookie, {secret: 'abc123'}
+        b.use Rack::Session::Cookie, {secret: '5242e6bd9daf0e9645c2d4e22b11ba8cee0bed44439906d5f1bd5dad409d8637'}
         b.use(OmniAuth::Strategies::Citadele, PRIVATE_KEY, 'missing-private-crt-file.pem', PUBLIC_CRT, 'MY_FROM')
         b.run lambda{|env| [404, {}, ['Not Found']]}
       end.to_app }
@@ -161,7 +162,7 @@ def post_to_request_phase_path
 
     context 'with non-existant public key file' do
       let(:app){ Rack::Builder.new do |b|
-        b.use Rack::Session::Cookie, {secret: 'abc123'}
+        b.use Rack::Session::Cookie, {secret: '5242e6bd9daf0e9645c2d4e22b11ba8cee0bed44439906d5f1bd5dad409d8637'}
         b.use(OmniAuth::Strategies::Citadele, PRIVATE_KEY, PRIVATE_CRT, 'missing-public-key-file.pem' )
         b.run lambda{|env| [404, {}, ['Not Found']]}
       end.to_app }