diff --git a/.idea/php.xml b/.idea/php.xml
index 424c32b..a6bc50b 100644
--- a/.idea/php.xml
+++ b/.idea/php.xml
@@ -35,7 +35,7 @@
       <path value="$PROJECT_DIR$/vendor/symfony/dependency-injection" />
     </include_path>
   </component>
-  <component name="PhpProjectSharedConfiguration" php_language_level="7.4">
+  <component name="PhpProjectSharedConfiguration" php_language_level="7.2">
     <option name="suggestChangeDefaultLanguageLevel" value="false" />
   </component>
 </project>
\ No newline at end of file
diff --git a/composer.json b/composer.json
index ee5ff3e..d7859ca 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "php": ">=7.4",
+        "php": ">=7.2",
         "symfony/framework-bundle": ">=4.3",
         "symfony/flex": "^1.2",
         "symfony/dependency-injection": "^v4.4",
diff --git a/src/Service/UptimeRobotApiService.php b/src/Service/UptimeRobotApiService.php
index dd13a0e..3f5cc0b 100644
--- a/src/Service/UptimeRobotApiService.php
+++ b/src/Service/UptimeRobotApiService.php
@@ -14,9 +14,9 @@ class UptimeRobotApiService
 
     private $interval;
 
-    private string $alertContactsString;
+    private $alertContactsString;
 
-    private array $alertContacts;
+    private $alertContacts;
 
     /** @var $client */
     protected $client;