diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 801af43..2caf24f 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -15,7 +15,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        php: [8.3, 8.4]
+        php: [8.2, 8.3, 8.4, 8.5]
 
     name: PHP ${{ matrix.php }}
 
diff --git a/src/EnumGetter.php b/src/EnumGetter.php
index 30a912f..edf3c5b 100644
--- a/src/EnumGetter.php
+++ b/src/EnumGetter.php
@@ -43,7 +43,7 @@ public function value(): string
      */
     public static function of(string $name): static
     {
-        return self::{$name};
+        return constant(self::class.'::'.$name);
     }
 
     /**