diff --git a/composer.json b/composer.json
index 8c8672b83d18d572f34a732a9a53d00fdcf47e93..d0448a8b4d77b6c8f8fbb7b423a9e6c691176905 100644
--- a/composer.json
+++ b/composer.json
@@ -48,7 +48,7 @@
     "drupal/activitypub": "^1.0@alpha",
     "drupal/admin_toolbar": "^3.4",
     "drupal/antibot": "^2.0",
-    "drupal/block_class": "^2.0",
+    "drupal/block_class": "^4.0",
     "drupal/bpmn_io": "^1.1|^2.0",
     "drupal/config_auto_export": "^2.2",
     "drupal/config_filter": "^2.4",