diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..ae1ad66
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,43 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      matrix:
+        operating-system: ['ubuntu-latest']
+        php-versions: ['7.4', '8.0']
+        phpunit-versions: ['latest']
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-versions }}
+          extensions: mbstring, intl, sodium, sqlite
+          ini-values: post_max_size=256M, max_execution_time=180
+
+      - name: Install dependencies
+        run: composer install
+
+      - name: PHPUnit tests
+        uses: php-actions/phpunit@v3
+        env:
+          BOOKBOON_API_ID: ${{ secrets.BOOKBOON_API_ID }}
+          BOOKBOON_API_KEY: ${{ secrets.BOOKBOON_API_KEY }}
+        timeout-minutes: 30
+        with:
+          memory_limit: 256M
+
+      - name: Static Analysis
+        run: vendor/bin/psalm
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 6810c50..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-language: php
-
-php:
-  - 7.3
-  - 7.4
-  - 8.0
-
-env:
-  global:
-    secure: ZVjngag+tfsp++ohG/7dmzqdI8M20ZemYrhEpRk/1j1mTsJfdjED4YTTzBrSHld5Qc5Lq3HNPqpqwiKjxMtBdLi04vWi9PuvIStYYa6uWFBKv1m4+SGYXbyFa70uFtjtiI8X9eakRDocT2syiZqS2xafkVFHHTPCRcod1mUBQ7E=
-
-services:
-  - memcached
-  - redis-server
-
-jobs:
-  include:
-    - stage: "Tests"
-      name: "Unit Tests"
-      script: vendor/bin/phpunit -c . --coverage-clover build/logs/clover.xml
-    - name: "Static Analyser"
-      script: vendor/bin/psalm
-
-before_script:
-  - echo "extension = memcached.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
-  - echo "extension = redis.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
-  - echo "extension = igbinary.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
-  - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
-  - chmod +x ./cc-test-reporter
-  - ./cc-test-reporter before-build
-  - composer install
-
-after_script:
-  - ./cc-test-reporter after-build --exit-code $TRAVIS_TEST_RESULT
diff --git a/composer.json b/composer.json
index c4d47b9..9d22b79 100644
--- a/composer.json
+++ b/composer.json
@@ -34,5 +34,10 @@
         "psr-4": {
             "Helpers\\": "tests/Helpers/"
         }
+    },
+    "config": {
+        "allow-plugins": {
+            "composer/package-versions-deprecated": true
+        }
     }
 }
diff --git a/src/Client/OauthClient.php b/src/Client/OauthClient.php
index f04ab86..08ba269 100644
--- a/src/Client/OauthClient.php
+++ b/src/Client/OauthClient.php
@@ -323,9 +323,9 @@ protected function normalizeHeaders(array $headers) : array
         return $returnHeaders;
     }
 
-    public function setAct(?string $act) : void
+    public function setAct(?string $appUserId) : void
     {
-        $this->act = $act;
+        $this->act = $appUserId;
     }
 
     public function getAct() : ?string