diff --git a/.ci/config-test.inc.php b/.ci/config-test.inc.php
deleted file mode 100644
index 2cba28441..000000000
--- a/.ci/config-test.inc.php
+++ /dev/null
@@ -1,30 +0,0 @@
-<?php
-
-$config = array();
-
-// Database configuration
-$config['db_dsnw'] = 'sqlite:////tmp/sqlite.db?mode=0646';
-
-// Test user credentials
-$config['tests_username'] = 'test';
-$config['tests_password'] = 'test';
-
-// GreenMail
-$config['smtp_port'] = 25;
-
-// Settings required by the tests
-
-$config['create_default_folders'] = true;
-$config['skin'] = 'elastic';
-$config['support_url'] = 'http://support.url';
-
-// Plugins with tests
-
-$config['plugins'] = [
-    'archive',
-    'attachment_reminder',
-    'markasjunk',
-    'zipdownload'
-];
-
-$config['archive_mbox'] = 'Archive';
diff --git a/.ci/install.sh b/.ci/install.sh
deleted file mode 100755
index 5ea97338d..000000000
--- a/.ci/install.sh
+++ /dev/null
@@ -1,36 +0,0 @@
-#!/bin/bash
-
-# The script is intended for use on Travis with Trusty distribution
-
-DIR=$(dirname $0)
-
-# Enable xdebug for code coverage
-if [ "$CODE_COVERAGE" != 1 ]; then phpenv config-rm xdebug.ini || true; fi
-
-cd $DIR/..
-
-cp composer.json-dist composer.json
-
-# Add laravel/dusk for Browser tests
-if [ "$BROWSER_TESTS" = 1 ]; then composer require "laravel/dusk:~6.9.0" --no-update; fi
-
-# Add suggested dependencies required for tests
-composer require "kolab/net_ldap3:~1.1.1" --no-update
-
-# phpunit v7 is working fine on PHP8, but composer installs an older version,
-# so we'll emulate PHP 7.4 platform to get phpunit v7
-if [[ ${TRAVIS_PHP_VERSION:0:1} == "8" ]]; then composer config platform.php 7.4; fi
-
-# Install PHP dependencies
-composer install --prefer-dist
-
-# Install Less for Elastic CSS compilation, and UglifyJS for JS files minification
-if [ "$BROWSER_TESTS" = 1 ]
-then
-    npm install --force -g less
-    npm install --force -g less-plugin-clean-css
-    npm install --force -g uglify-js
-fi
-
-# Roundcube tests and instance configuration
-cp .ci/config-test.inc.php config/config-test.inc.php
diff --git a/.ci/run.sh b/.ci/run.sh
deleted file mode 100755
index fce236bcc..000000000
--- a/.ci/run.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/bin/bash
-
-# The script is intended for use on Travis with Trusty distribution
-# It executes unit and functional tests
-
-DIR=$(dirname $0)
-cd $DIR/..
-
-if [ "$CODE_COVERAGE" = 1 ]
-then
-    CODE_COVERAGE_ARGS="--coverage-text"
-fi
-
-vendor/bin/phpunit -c tests/phpunit.xml $CODE_COVERAGE_ARGS
-
-if [ $? != 0 ]
-then
-    cat logs/errors.log
-    exit 1
-fi
-
-if [ "$BROWSER_TESTS" = 1 ]
-then
-    .ci/setup.sh \
-    && echo "TESTS_MODE: DESKTOP" \
-    && TESTS_MODE=desktop vendor/bin/phpunit -c tests/Browser/phpunit.xml --exclude-group=failsontravis \
-    && echo "TESTS_MODE: PHONE" \
-    && TESTS_MODE=phone vendor/bin/phpunit -c tests/Browser/phpunit.xml --exclude-group=failsontravis-phone \
-    && echo "TESTS_MODE: TABLET" \
-    && TESTS_MODE=tablet vendor/bin/phpunit -c tests/Browser/phpunit.xml --exclude-group=failsontravis-tablet
-fi
diff --git a/.ci/setup.sh b/.ci/setup.sh
deleted file mode 100755
index 7a66f87f7..000000000
--- a/.ci/setup.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/bin/bash
-
-# The script is intended for use on Travis with Trusty distribution
-# It installs in-browser tests dependencies and prepares Roundcube instance
-
-GMV=1.5.11
-CHROMEVERSION=$(google-chrome-stable --version | tr -cd [:digit:]. | cut -d . -f 1)
-GMARGS="-Dgreenmail.setup.all -Dgreenmail.users=test:test -Dgreenmail.startup.timeout=3000"
-
-# Make temp and logs writeable
-sudo chmod 777 temp logs
-
-# Install javascript dependencies
-bin/install-jsdeps.sh
-
-# Compile Elastic's styles
-lessc --clean-css="--s1 --advanced" skins/elastic/styles/styles.less > skins/elastic/styles/styles.min.css
-lessc --clean-css="--s1 --advanced" skins/elastic/styles/print.less > skins/elastic/styles/print.min.css
-lessc --clean-css="--s1 --advanced" skins/elastic/styles/embed.less > skins/elastic/styles/embed.min.css
-
-# Use minified javascript files
-bin/jsshrink.sh
-
-# Install proper WebDriver version for installed Chrome browser
-php tests/Browser/install.php $CHROMEVERSION
-
-# GreenMail server download, setup and start
-wget https://repo1.maven.org/maven2/com/icegreen/greenmail-standalone/$GMV/greenmail-standalone-$GMV.jar \
-    && (sudo java $GMARGS -jar greenmail-standalone-$GMV.jar &) \
-    && sleep 5
diff --git a/.github/config-test.inc.php b/.github/config-test.inc.php
index 2cba28441..406fb3614 100644
--- a/.github/config-test.inc.php
+++ b/.github/config-test.inc.php
@@ -1,6 +1,6 @@
 <?php
 
-$config = array();
+$config = [];
 
 // Database configuration
 $config['db_dsnw'] = 'sqlite:////tmp/sqlite.db?mode=0646';
diff --git a/.htaccess b/.htaccess
index d93fe440d..302cd38bc 100644
--- a/.htaccess
+++ b/.htaccess
@@ -10,7 +10,7 @@ RewriteRule ^favicon\.ico$ skins/larry/images/favicon.ico
 #   in all locations except installer directory
 RewriteRule ^(?!installer|\.well-known\/|[a-zA-Z0-9]{16})(\.?[^\.]+)$ - [F]
 # - deny access to some locations
-RewriteRule ^/?(\.git|\.tx|\.ci|SQL|bin|config|logs|temp|tests|vendor|program\/(include|lib|localization|steps)) - [F]
+RewriteRule ^/?(\.git|\.tx|SQL|bin|config|logs|temp|tests|vendor|program\/(include|lib|localization|steps)) - [F]
 # - deny access to some documentation files
 RewriteRule /?(README.*|CHANGELOG.*|SECURITY.*|meta\.json|composer\..*|jsdeps.json)$ - [F]
 </IfModule>
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index c29c456a8..000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-language: php
-
-dist: xenial
-sudo: false
-
-matrix:
-  fast_finish: true
-  include:
-    #- php: 5.5
-    #  dist: trusty
-    #- php: 5.6
-    #- php: 7.0
-    #  env: CODE_COVERAGE=1
-    #- php: 7.1
-    #- php: 7.2
-    #- php: 7.3
-    #  dist: bionic # for proper node-less version
-    #  env: BROWSER_TESTS=1
-    #  addons:
-    #    chrome: stable
-    #- php: 7.4
-    - php: 8.0
-      dist: bionic # for proper node-less version
-      env: BROWSER_TESTS=1
-      addons:
-        chrome: stable
-
-cache:
-  directories:
-    - $HOME/.composer
-
-install:
-  - .ci/install.sh
-
-script:
-  - .ci/run.sh
-
-notifications:
-  email: false
diff --git a/README.md b/README.md
index 3c8a371f9..9b6ca6a08 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@ Roundcube Webmail
 =================
 [roundcube.net](https://roundcube.net)
 
-[![Build Status](https://api.travis-ci.org/roundcube/roundcubemail.svg?branch=master)](https://travis-ci.org/roundcube/roundcubemail)
 [![Tests Status](https://github.com/roundcube/roundcubemail/actions/workflows/tests.yml/badge.svg?branch=master)](https://github.com/roundcube/roundcubemail/actions/workflows/tests.yml)
 
 ATTENTION