diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bbf1c38..fe8d251 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,13 +16,13 @@ jobs:
         timeout-minutes: 15
         strategy:
             matrix:
-                php: [ '8.0', '8.1', '8.2' ]
+                php: [ '8.0', '8.1', '8.2', '8.3' ]
                 dependency-version: [ '' ]
                 include:
                     -   php: '8.0'
                         dependency-version: '--prefer-lowest'
         steps:
-            -   uses: actions/checkout@v2
+            -   uses: actions/checkout@v3
             -   name: Setup PHP
                 uses: shivammathur/setup-php@v2
                 with:
@@ -30,7 +30,7 @@ jobs:
                     tools: composer:v2
                     coverage: none
             -   name: Cache Composer dependencies
-                uses: actions/cache@v2
+                uses: actions/cache@v3
                 with:
                     path: ~/.composer/cache
                     key: php-${{ matrix.php }}-composer-locked-${{ hashFiles('composer.lock') }}
@@ -44,15 +44,15 @@ jobs:
         name: Coding standards
         runs-on: ubuntu-latest
         steps:
-            -   uses: actions/checkout@v2
+            -   uses: actions/checkout@v3
             -   name: Setup PHP
                 uses: shivammathur/setup-php@v2
                 with:
-                    php-version: 8.1
+                    php-version: '8.2'
                     tools: composer:v2, cs2pr
                     coverage: none
             -   name: Cache Composer dependencies
-                uses: actions/cache@v2
+                uses: actions/cache@v3
                 with:
                     path: ~/.composer/cache
                     key: php-composer-locked-${{ hashFiles('composer.lock') }}
diff --git a/composer.json b/composer.json
index 26cb408..fac18e5 100644
--- a/composer.json
+++ b/composer.json
@@ -19,9 +19,9 @@
         "async-aws/ssm": "^1.3"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.0",
+        "phpunit/phpunit": "^9.6.10",
         "mnapoli/hard-mode": "^0.3.0",
-        "phpstan/phpstan": "^1"
+        "phpstan/phpstan": "^1.10.26"
     },
     "config": {
         "allow-plugins": {