diff --git a/descriptions-next/api.github.com/api.github.com.2022-11-28.json b/descriptions-next/api.github.com/api.github.com.2022-11-28.json
index ab010b7fad..626b8831d5 100644
--- a/descriptions-next/api.github.com/api.github.com.2022-11-28.json
+++ b/descriptions-next/api.github.com/api.github.com.2022-11-28.json
@@ -66229,6 +66229,9 @@
           },
           {
             "$ref": "#/components/parameters/page"
+          },
+          {
+            "$ref": "#/components/parameters/issue-timeline-exclude"
           }
         ],
         "responses": {
@@ -348278,6 +348281,14 @@
           "type": "integer"
         }
       },
+      "issue-timeline-exclude": {
+        "name": "exclude",
+        "in": "query",
+        "description": "A comma-separated list of timeline event names to exclude from the response.",
+        "schema": {
+          "type": "string"
+        }
+      },
       "key-id": {
         "name": "key_id",
         "description": "The unique identifier of the key.",
diff --git a/descriptions-next/api.github.com/api.github.com.2022-11-28.yaml b/descriptions-next/api.github.com/api.github.com.2022-11-28.yaml
index adef4353d6..c2b67fb15c 100644
--- a/descriptions-next/api.github.com/api.github.com.2022-11-28.yaml
+++ b/descriptions-next/api.github.com/api.github.com.2022-11-28.yaml
@@ -48695,6 +48695,7 @@ paths:
       - "$ref": "#/components/parameters/issue-number"
       - "$ref": "#/components/parameters/per-page"
       - "$ref": "#/components/parameters/page"
+      - "$ref": "#/components/parameters/issue-timeline-exclude"
       responses:
         '200':
           description: Response
@@ -260683,6 +260684,13 @@ components:
       required: true
       schema:
         type: integer
+    issue-timeline-exclude:
+      name: exclude
+      in: query
+      description: A comma-separated list of timeline event names to exclude from
+        the response.
+      schema:
+        type: string
     key-id:
       name: key_id
       description: The unique identifier of the key.
diff --git a/descriptions-next/api.github.com/api.github.com.2026-03-10.json b/descriptions-next/api.github.com/api.github.com.2026-03-10.json
index c737f7e211..b12be81c39 100644
--- a/descriptions-next/api.github.com/api.github.com.2026-03-10.json
+++ b/descriptions-next/api.github.com/api.github.com.2026-03-10.json
@@ -66140,6 +66140,9 @@
           },
           {
             "$ref": "#/components/parameters/page"
+          },
+          {
+            "$ref": "#/components/parameters/issue-timeline-exclude"
           }
         ],
         "responses": {
@@ -347321,6 +347324,14 @@
           "type": "integer"
         }
       },
+      "issue-timeline-exclude": {
+        "name": "exclude",
+        "in": "query",
+        "description": "A comma-separated list of timeline event names to exclude from the response.",
+        "schema": {
+          "type": "string"
+        }
+      },
       "key-id": {
         "name": "key_id",
         "description": "The unique identifier of the key.",
diff --git a/descriptions-next/api.github.com/api.github.com.2026-03-10.yaml b/descriptions-next/api.github.com/api.github.com.2026-03-10.yaml
index d8eab721ff..5559575828 100644
--- a/descriptions-next/api.github.com/api.github.com.2026-03-10.yaml
+++ b/descriptions-next/api.github.com/api.github.com.2026-03-10.yaml
@@ -48620,6 +48620,7 @@ paths:
       - "$ref": "#/components/parameters/issue-number"
       - "$ref": "#/components/parameters/per-page"
       - "$ref": "#/components/parameters/page"
+      - "$ref": "#/components/parameters/issue-timeline-exclude"
       responses:
         '200':
           description: Response
@@ -259878,6 +259879,13 @@ components:
       required: true
       schema:
         type: integer
+    issue-timeline-exclude:
+      name: exclude
+      in: query
+      description: A comma-separated list of timeline event names to exclude from
+        the response.
+      schema:
+        type: string
     key-id:
       name: key_id
       description: The unique identifier of the key.
diff --git a/descriptions-next/api.github.com/api.github.com.json b/descriptions-next/api.github.com/api.github.com.json
index a1f8c1364a..54bad76b3b 100644
--- a/descriptions-next/api.github.com/api.github.com.json
+++ b/descriptions-next/api.github.com/api.github.com.json
@@ -66536,6 +66536,9 @@
           },
           {
             "$ref": "#/components/parameters/page"
+          },
+          {
+            "$ref": "#/components/parameters/issue-timeline-exclude"
           }
         ],
         "responses": {
@@ -350420,6 +350423,14 @@
           "type": "integer"
         }
       },
+      "issue-timeline-exclude": {
+        "name": "exclude",
+        "in": "query",
+        "description": "A comma-separated list of timeline event names to exclude from the response.",
+        "schema": {
+          "type": "string"
+        }
+      },
       "key-id": {
         "name": "key_id",
         "description": "The unique identifier of the key.",
diff --git a/descriptions-next/api.github.com/api.github.com.yaml b/descriptions-next/api.github.com/api.github.com.yaml
index 75da32df07..0f47f80ad6 100644
--- a/descriptions-next/api.github.com/api.github.com.yaml
+++ b/descriptions-next/api.github.com/api.github.com.yaml
@@ -48883,6 +48883,7 @@ paths:
       - "$ref": "#/components/parameters/issue-number"
       - "$ref": "#/components/parameters/per-page"
       - "$ref": "#/components/parameters/page"
+      - "$ref": "#/components/parameters/issue-timeline-exclude"
       responses:
         '200':
           description: Response
@@ -262036,6 +262037,13 @@ components:
       required: true
       schema:
         type: integer
+    issue-timeline-exclude:
+      name: exclude
+      in: query
+      description: A comma-separated list of timeline event names to exclude from
+        the response.
+      schema:
+        type: string
     key-id:
       name: key_id
       description: The unique identifier of the key.
diff --git a/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json b/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json
index 3b356c491c..ff57dbc77d 100644
--- a/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json
+++ b/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json
@@ -573266,6 +573266,14 @@
               "type": "integer",
               "default": 1
             }
+          },
+          {
+            "name": "exclude",
+            "in": "query",
+            "description": "A comma-separated list of timeline event names to exclude from the response.",
+            "schema": {
+              "type": "string"
+            }
           }
         ],
         "responses": {
diff --git a/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml b/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml
index 2ee038110a..627cb75358 100644
--- a/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml
+++ b/descriptions-next/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml
@@ -94560,6 +94560,12 @@ paths:
       - *546
       - *17
       - *19
+      - name: exclude
+        in: query
+        description: A comma-separated list of timeline event names to exclude from
+          the response.
+        schema:
+          type: string
       responses:
         '200':
           description: Response
diff --git a/descriptions-next/api.github.com/dereferenced/api.github.com.2026-03-10.deref.json b/descriptions-next/api.github.com/dereferenced/api.github.com.2026-03-10.deref.json
index f65db81de6..ec93859e86 100644
--- a/descriptions-next/api.github.com/dereferenced/api.github.com.2026-03-10.deref.json
+++ b/descriptions-next/api.github.com/dereferenced/api.github.com.2026-03-10.deref.json
@@ -561285,6 +561285,14 @@
               "type": "integer",
               "default": 1
             }
+          },
+          {
+            "name": "exclude",
+            "in": "query",
+       {"code":"deadline_exceeded","msg":"operation timed out"}