diff --git a/.coveralls.yml b/.coveralls.yml
deleted file mode 100644
index 4eecff5..0000000
--- a/.coveralls.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-service_name: travis-ci
-coverage_clover: clover.xml
-json_path: coveralls-upload.json
diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index b85b2e4..c6c1fcc 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -8,10 +8,10 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: ['7.3', '7.4', '8.0', '8.1']
+        php-versions: ['7.0', '7.3', '7.4', '8.0', '8.1', '8.3', '8.4']
     steps:
     - name: Checkout
       uses: actions/checkout@v2
diff --git a/.scrutinizer.yml b/.scrutinizer.yml
deleted file mode 100644
index 6366e5d..0000000
--- a/.scrutinizer.yml
+++ /dev/null
@@ -1,31 +0,0 @@
-filter:
-    excluded_paths:
-        - 'vendor/*'
-before_commands:
-    - 'composer install'
-build:
-    nodes:
-        analysis:
-            tests:
-                override:
-                    - php-scrutinizer-run
-    tests:
-        override:
-            - phpcs-run --standard=PSR2
-tools:
-    php_analyzer: true
-    php_mess_detector: true
-    php_code_sniffer:
-        config:
-            standard: PSR2
-    sensiolabs_security_checker: true
-    php_loc:
-        excluded_dirs:
-            - vendor
-    php_pdepend: true
-    php_sim: true
-build_failure_conditions:
-    - 'elements.rating(< A).new.exists'
-    - 'issues.label("coding-style").new.exists'
-    - 'issues.severity(>= MAJOR).new.exists'
-    - 'project.metric("scrutinizer.quality", < 10)'
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 2ae23d6..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-language: php
-php:
-  - 7.0
-  - 7.1
-  - 7.2
-  - nightly
-env:
-  - PREFER_LOWEST="--prefer-lowest --prefer-stable"
-  - PREFER_LOWEST=""
-matrix:
-  fast_finish: true
-  allow_failures:
-     - php: nightly
-before_script:
-  - composer update $PREFER_LOWEST
-script:
-  - ./vendor/bin/phpunit
-after_success: ./vendor/bin/coveralls -v
diff --git a/composer.json b/composer.json
index 7725d71..8abe78f 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
         "sort-packages": true
     },
     "require": {
-        "php": "^7.3 || ^8.0"
+        "php": "^7.0||^8.0"
     },
     "autoload": {
         "psr-4": {
@@ -19,7 +19,7 @@
         }
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.0",
+        "phpunit/phpunit": "^6.5||^9.0",
         "squizlabs/php_codesniffer": "^3.2"
     },
     "scripts": {