diff --git a/containers/backupchecks/src/backend/app/integrations/autotask/client.py b/containers/backupchecks/src/backend/app/integrations/autotask/client.py
index 1e353b1..c099eaa 100644
--- a/containers/backupchecks/src/backend/app/integrations/autotask/client.py
+++ b/containers/backupchecks/src/backend/app/integrations/autotask/client.py
@@ -669,6 +669,7 @@ class AutotaskClient:
             "companyID",
             "queueID",
             "title",
+            "description",
             "priority",
             "dueDateTime",
             "ticketCategory",
diff --git a/docs/changelog-claude.md b/docs/changelog-claude.md
index 5e4e2a7..1a386e3 100644
--- a/docs/changelog-claude.md
+++ b/docs/changelog-claude.md
@@ -4,6 +4,9 @@ This file documents all changes made to this project via Claude Code.
 
 ## [2026-02-09]
 
+### Fixed
+- Fixed Autotask ticket description being set to NULL when resolving tickets via `update_ticket_resolution_safe` by adding "description" to the optional_fields list, ensuring the original description is preserved during PUT operations
+
 ### Changed
 - Updated `docs/changelog.md` with comprehensive v0.1.23 release notes consolidating all changes from 2026-02-06 through 2026-02-08 (Documentation System, Audit Logging, Timezone-Aware Display, Autotask Improvements, Environment Identification, Bug Fixes)
 - Updated `containers/backupchecks/src/backend/app/changelog.py` with v0.1.23 entry in Python structure for website display (8 sections with subsections matching changelog.md content)