diff -u b/core/modules/comment/comment.module b/core/modules/comment/comment.module
--- b/core/modules/comment/comment.module
+++ b/core/modules/comment/comment.module
@@ -35,7 +35,7 @@
  * Comments changed after this time may be marked new, updated, or read,
  * depending on their state for the current user. Defaults to 30 days ago.
  *
- * @deprecated in drupal:8.9.0 and is removed from drupal:9.0.0.
+ * @deprecated in drupal:9.1.0 and is removed from drupal:10.0.0.
  *   No replacement is provided.
  *
  * @see https://www.drupal.org/node/1029708