diff --git a/src/Hooks/TestCaseHandler.php b/src/Hooks/TestCaseHandler.php
index 63f1838..c182fe0 100644
--- a/src/Hooks/TestCaseHandler.php
+++ b/src/Hooks/TestCaseHandler.php
@@ -20,6 +20,8 @@
 use Psalm\StatementsSource;
 use Psalm\Storage\ClassLikeStorage;
 use Psalm\Type;
+use Psalm\Type\Atomic\TIterable;
+use Psalm\Type\Union;
 
 class TestCaseHandler implements
     AfterClassLikeVisitInterface,
@@ -89,7 +91,7 @@ public static function afterClassLikeVisit(
                 if (false !== strpos($provider, '::')) {
                     [$class_name] = explode('::', $provider);
                     $fq_class_name = Type::getFQCLNFromString($class_name, $statements_source->getAliases());
-                    $codebase->scanner->queueClassLikeForScanning($fq_class_name, $file_path);
+                    self::queueClassLikeForScanning($codebase, $fq_class_name, $file_path);
                     $file_storage->referenced_classlikes[strtolower($fq_class_name)] = $fq_class_name;
                 }
             }
@@ -515,4 +517,17 @@ function (array $lines): array {
         }
         return [];
     }
+
+    private static function queueClassLikeForScanning(
+        Codebase $codebase,
+        string $fq_class_name,
+        string $file_path
+    ): void {
+        if (method_exists($codebase, 'queueClassLikeForScanning')) {
+            $codebase->queueClassLikeForScanning($fq_class_name);
+        } else {
+            /** @psalm-suppress InvalidScalarArgument */
+            $codebase->scanner->queueClassLikeForScanning($fq_class_name, $file_path);
+        }
+    }
 }