diff --git a/src/Concerns/DetectsChromeVersion.php b/src/Concerns/DetectsChromeVersion.php
index 9c87473..877b380 100644
--- a/src/Concerns/DetectsChromeVersion.php
+++ b/src/Concerns/DetectsChromeVersion.php
@@ -136,6 +136,8 @@ protected function installedChromeVersion(string $operatingSystem, $directory =
                 continue;
             }
 
+            /** @var array{0: string, 1: string, 2: string, 3: string} $matches */
+
             $semver = implode('.', [$matches[1], $matches[2], $matches[3]]);
 
             return [
@@ -178,6 +180,8 @@ protected function installedChromeDriverVersion(string $operatingSystem, string
             preg_match('/ChromeDriver\s(\d+)\.(\d+)\.(\d+)(\.\d+)?\s[\w\D]+/', $process->getOutput(), $matches);
 
             if (isset($matches[1])) {
+                /** @var array{0: string, 1: string, 2: string, 3: string} $matches */
+
                 $semver = implode('.', [$matches[1], $matches[2], $matches[3]]);
 
                 return [