diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index 198da3a..d3fbb21 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -13,9 +13,9 @@ jobs:
       - uses: actions/checkout@v3
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.0
+          php-version: 8.2
           coverage: none
 
       - run: composer install --no-progress --prefer-dist
-      - run: composer phpstan -- --no-progress
+      - run: composer stan -- --no-progress
         continue-on-error: true # is only informative
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 29c6331..845b7b7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: ['8.0', '8.1', '8.2', '8.3']
+        php: ['8.2', '8.3', '8.4']
 
       fail-fast: false
 
@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.0
+          php-version: 8.2
           coverage: none
 
       - run: composer update --no-progress --prefer-dist --prefer-lowest --prefer-stable
@@ -47,7 +47,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.0
+          php-version: 8.2
           coverage: none
 
       - run: composer install --no-progress --prefer-dist
diff --git a/composer.json b/composer.json
index 56835f3..ae20085 100644
--- a/composer.json
+++ b/composer.json
@@ -12,8 +12,8 @@
     }
   ],
   "require": {
-    "php": ">=8.0",
-    "h4kuna/critical-cache": "^v1.0",
+    "php": ">=8.2",
+    "h4kuna/critical-cache": "^v1.0.4",
     "psr/http-client": "^1.0",
     "psr/http-factory": "^1.0",
     "psr/http-message": "^1.0 || ^2.0"
diff --git a/src/Utils.php b/src/Utils.php
index eedc46f..1964054 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -114,7 +114,7 @@ public static function transformCurrencies(array $currencies): array
 	/**
 	 * @param int $beforeExpiration // 900 seconds -> 15 minutes
 	 */
-	public static function countTTL(DateTime $dateTime, int $beforeExpiration = 900, int $time = null): int
+	public static function countTTL(DateTime $dateTime, int $beforeExpiration = 900, ?int $time = null): int
 	{
 		$time ??= time();
 		if (($dateTime->getTimestamp() - $beforeExpiration) <= $time) {