diff --git a/src/Codeception/Lib/Di.php b/src/Codeception/Lib/Di.php
index 8cd2f2d462..5a6f6e370d 100644
--- a/src/Codeception/Lib/Di.php
+++ b/src/Codeception/Lib/Di.php
@@ -144,10 +144,6 @@ protected function prepareArgs(ReflectionMethod $method, array $defaults = []):
                     if (!isset($defaults[$k])) {
                         throw new InjectionException("Parameter '{$parameter->name}' must have default value.");
                     }
-                    Notification::deprecate(
-                        'Untyped method arguments in Cest format are deprecated since Codeception 5.0.0 and will be removed in 6.0.0',
-                        $method->getFileName() . ':' . $method->getStartLine(),
-                    );
                     $args[] = $defaults[$k];
                     continue;
                 }