diff --git a/.travis.yml b/.travis.yml
index 8c4f2ae..f118f76 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,6 +33,7 @@ matrix:
           env: DEPENDENCIES="dunglas/symfony-lock:^4" SYMFONY_DEPRECATIONS_HELPER="2"
 
         - php: 7.3
+        - php: 8.0
 
           # Latest commit to master
         - php: 7.4
diff --git a/composer.json b/composer.json
index 6ba3bf1..84f9b60 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
         }
     ],
     "require": {
-        "php": "^7.2",
+        "php": "^7.2 || ^8.0",
         "nikic/php-parser": "^3.0 || ^4.0",
         "symfony/finder": "^3.4 || ^4.3 || ^5.0",
         "twig/twig": "^2.0 || ^3.0",
diff --git a/src/Model/SourceLocation.php b/src/Model/SourceLocation.php
index bf715e5..39743bd 100644
--- a/src/Model/SourceLocation.php
+++ b/src/Model/SourceLocation.php
@@ -37,7 +37,7 @@ public function __construct(string $message, string $path, int $line, array $con
      */
     public static function createHere(string $message, array $context = []): self
     {
-        foreach (debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2) as $trace) {
+        foreach (debug_backtrace(\DEBUG_BACKTRACE_PROVIDE_OBJECT, 2) as $trace) {
             // File is not set if we call from an anonymous context like an array_map function.
             if (isset($trace['file'])) {
                 break;