diff --git a/.github/ISSUE_TEMPLATE/Bug_report.md b/.github/ISSUE_TEMPLATE/Bug_report.md
index e31634376..87b9aabf6 100644
--- a/.github/ISSUE_TEMPLATE/Bug_report.md
+++ b/.github/ISSUE_TEMPLATE/Bug_report.md
@@ -10,8 +10,9 @@ assignees: ''
 ### Checklist
 
 - [ ] I verified that Kanboard is correctly installed
-- [ ] I checked that the problem does not come from a plugin
-- [ ] I checked that the problem is not already reported
+- [ ] I verified that the problem does not come from a plugin
+- [ ] I verified that the problem is not already reported
+- [ ] I understand that Kanboard is in maintenance mode. It doesn't mean it's abandoned, but there is no significant feature development
 
 <!-- Please, read the documentation: https://docs.kanboard.org/ -->
 
diff --git a/ChangeLog b/ChangeLog
index bfc579f54..09246bf56 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,22 @@
+Version 1.2.21 (December 16, 2021)
+----------------------------------
+
+* Fix and update Composer autoload
+* Add plugin hook for document attachments
+* Improve board column header alignment
+* Ignore `project_id` for file attachments download URL (already checked elsewhere)
+* Update translations
+* Clarify meaning of `LDAP_USER_CREATION` in `config.default.php`
+* Fix wrong internal link when converting a subtask to task (MySQL only)
+* Use the overridable Markdown parser for previews
+* Update `call_user_func_array()` calls to be compatible with PHP 8
+* Enable external group synchronization deactivation
+* Fix tooltip shifting on long descriptions
+* Add `position` argument to API procedure `updateSubtask()`
+* Bump Docker image to Alpine 3.15.0
+* Bump `symfony/stopwatch` to 5.4.0
+* Bump `pimple/pimple` to 3.5.0
+
 Version 1.2.20 (June 8, 2021)
 -----------------------------