diff --git a/src/Plugin/FillPdfActionPluginInterface.php b/src/Plugin/FillPdfActionPluginInterface.php
index 0c5dd642b0cb51f1ac13af8a082715c3024df5da..d6937022c9cbd638a6e5bb7ce11b84d4cbbfb42c 100644
--- a/src/Plugin/FillPdfActionPluginInterface.php
+++ b/src/Plugin/FillPdfActionPluginInterface.php
@@ -16,8 +16,6 @@ use Drupal\Core\Executable\ExecutableInterface;
  *
  * They may also have side effects, such as saving a file to the file system.
  * They must not, however, end the request.
- *
- * @todo Extend ConfigurableInterface once drupal:8.6.x is no longer supported.
  */
 interface FillPdfActionPluginInterface extends PluginInspectionInterface, DependentPluginInterface, ContainerFactoryPluginInterface, ExecutableInterface {