diff --git a/.github/workflows/php.yml b/.github/workflows/php.yml
index 08adda6..3f31e84 100644
--- a/.github/workflows/php.yml
+++ b/.github/workflows/php.yml
@@ -13,17 +13,17 @@ jobs:
 
     strategy:
       matrix:
-        php-versions: ['7.2', '7.3', '7.4']
+        php-versions: ['7.3', '7.4', '8.0']
 
     runs-on: ubuntu-latest
 
     if: "!contains(github.event.head_commit.message, '[ci skip]')"
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
 
     - name: setup PHP
-      uses: shivammathur/setup-php@master
+      uses: shivammathur/setup-php@v2
       with: 
         php-version: ${{ matrix.php-versions }}
         extension: intl, json, mbstring, xdebug, xml
@@ -33,7 +33,7 @@ jobs:
       run: composer validate
 
     - name: Install dependencies
-      run: composer install --prefer-dist --no-progress --no-suggest
+      run: composer install --prefer-source --no-progress --no-suggest
 
     - name: Run test suite
       run: composer test
diff --git a/composer.json b/composer.json
index c9b0042..2917565 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,8 @@
         }
     ],
     "require": {
-        "php": "^7.2"
+        "php": "^7.3 || ^8.0",
+        "codeigniter4/framework": "^4.1"
     },
     "autoload": {
         "psr-4": {
@@ -20,8 +21,7 @@
         }
     },
     "require-dev": {
-        "codeigniter4/framework": "^4.0",
-        "phpunit/phpunit": "^8.5"
+        "phpunit/phpunit": "^9.1"
     },
     "autoload-dev": {
         "psr-4": {
@@ -30,7 +30,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.x-dev"
+            "dev-master": "1.x-dev"
         }
     },
     "scripts": {