diff --git a/airbyte-integrations/connectors/source-zendesk-chat/manifest.yaml b/airbyte-integrations/connectors/source-zendesk-chat/manifest.yaml
index 15ef7429f190..2a0672955520 100644
--- a/airbyte-integrations/connectors/source-zendesk-chat/manifest.yaml
+++ b/airbyte-integrations/connectors/source-zendesk-chat/manifest.yaml
@@ -116,6 +116,10 @@ definitions:
           error_handler:
             type: DefaultErrorHandler
             description: The default error handler
+            response_filters:
+              - http_codes: [404]
+                action: IGNORE
+                error_message: "Record not found (likely deleted). Skipping."
             backoff_strategies:
               - type: WaitTimeFromHeader
                 header: Retry-After
@@ -247,6 +251,10 @@ definitions:
           error_handler:
             type: DefaultErrorHandler
             description: The default error handler
+            response_filters:
+              - http_codes: [404]
+                action: IGNORE
+                error_message: "Record not found (likely deleted). Skipping."
             backoff_strategies:
               - type: WaitTimeFromHeader
                 header: Retry-After
diff --git a/airbyte-integrations/connectors/source-zendesk-chat/metadata.yaml b/airbyte-integrations/connectors/source-zendesk-chat/metadata.yaml
index 21c15eacc5e8..dba655c0d20b 100644
--- a/airbyte-integrations/connectors/source-zendesk-chat/metadata.yaml
+++ b/airbyte-integrations/connectors/source-zendesk-chat/metadata.yaml
@@ -10,7 +10,7 @@ data:
   connectorSubtype: api
   connectorType: source
   definitionId: 40d24d0f-b8f9-4fe0-9e6c-b06c0f3f45e4
-  dockerImageTag: 1.2.20
+  dockerImageTag: 1.2.21
   dockerRepository: airbyte/source-zendesk-chat
   documentationUrl: https://docs.airbyte.com/integrations/sources/zendesk-chat
   githubIssueLabel: source-zendesk-chat
diff --git a/docs/integrations/sources/zendesk-chat-migrations.md b/docs/integrations/sources/zendesk-chat-migrations.md
index 702774c44514..cd6b66eb3a94 100644
--- a/docs/integrations/sources/zendesk-chat-migrations.md
+++ b/docs/integrations/sources/zendesk-chat-migrations.md
@@ -1,7 +1,7 @@
-import MigrationGuide from '@site/static/_migration_guides_upgrade_guide.md';
-
 # Zendesk Chat Migration Guide
 
+import MigrationGuide from '@site/static/_migration_guides_upgrade_guide.md';
+
 ## Upgrading to 1.0.0
 
 The Live Chat API [changed its URL structure](https://developer.zendesk.com/api-reference/live-chat/introduction/) to use the Zendesk subdomain.
diff --git a/docs/integrations/sources/zendesk-chat.md b/docs/integrations/sources/zendesk-chat.md
index b36ad7a609d9..6bc21e6a8b1b 100644
--- a/docs/integrations/sources/zendesk-chat.md
+++ b/docs/integrations/sources/zendesk-chat.md
@@ -84,6 +84,8 @@ The connector is restricted by Zendesk's [requests limitation](https://developer
 | Version | Date       | Pull Request                                             | Subject                                                                                                                                                                |
 |:--------|:-----------|:---------------------------------------------------------|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
 | 1.2.20 | 2025-10-07 | [67238](https://github.com/airbytehq/airbyte/pull/67238) | Update dependencies |
+| 1.2.21 | 2025-10-10 | [67607](https://github.com/airbytehq/airbyte/pull/67607) | Handle 404 errors for deleted records in chats and agent_timeline streams |
+
 | 1.2.19 | 2025-09-30 | [66845](https://github.com/airbytehq/airbyte/pull/66845) | Update dependencies |
 | 1.2.18 | 2025-09-24 | [66459](https://github.com/airbytehq/airbyte/pull/66459) | Update dependencies |
 | 1.2.17 | 2025-09-09 | [65491](https://github.com/airbytehq/airbyte/pull/65491) | Update dependencies |