diff --git a/.github/workflows/back-end.yml b/.github/workflows/back-end.yml
new file mode 100644
index 0000000..721d67b
--- /dev/null
+++ b/.github/workflows/back-end.yml
@@ -0,0 +1,46 @@
+# yaml-language-server: $schema=https://json.schemastore.org/github-workflow
+
+name: Integrate
+
+on:
+    pull_request: null
+    push:
+        branches:
+            - master
+
+jobs:
+    unit_tests:
+        name: Unit tests
+        strategy:
+            fail-fast: false
+            matrix:
+                php-version:
+                - 7.2
+                - 7.3
+                - 7.4
+                - 8.0
+                - 8.1
+                - 8.2
+                - 8.3
+        runs-on: ubuntu-latest
+        steps:
+        -
+            name: Set up PHP
+            uses: shivammathur/setup-php@v2
+            with:
+                php-version: ${{ matrix.php-version }}
+        -
+            name: Setup problem matcher for PHPUnit
+            run: |
+                echo ::add-matcher::${{ runner.tool_cache }}/phpunit.json
+        -
+            name: Checkout repository
+            uses: actions/checkout@v4
+        -
+            name: Install dependencies
+            uses: ramsey/composer-install@v3
+            with:
+                dependency-versions: highest
+        -
+            name: Execute unit tests
+            run: composer exec -- phpunit
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 637596a..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-language: php
-
-php:
-  - 7.2
-  - 7.3
-  - 7.4
-  - 8.0
-
-before_script:
-  - curl -s http://getcomposer.org/installer | php
-  - php composer.phar install --dev
-
-script: phpunit
diff --git a/README.md b/README.md
old mode 100755
new mode 100644