diff --git a/doc/compiled.json b/doc/compiled.json
index 7927c283..e7a63f70 100644
--- a/doc/compiled.json
+++ b/doc/compiled.json
@@ -23663,6 +23663,16 @@
                 "translation_placeholder_usage"
               ]
             }
+          },
+          {
+            "name": "created_since",
+            "in": "query",
+            "required": false,
+            "schema": {
+              "type": "string"
+            },
+            "example": "2026-01-01T12:00:00Z",
+            "description": "Return only check issues created on or after this ISO 8601 datetime. Returns 400 if the value is not a valid date-time."
           }
         ],
         "responses": {
diff --git a/paths/checks/index.yaml b/paths/checks/index.yaml
index ef6b2a1f..cb84f01f 100644
--- a/paths/checks/index.yaml
+++ b/paths/checks/index.yaml
@@ -54,6 +54,13 @@ parameters:
       - translation_glossary_usage
     example:
     - translation_placeholder_usage
+- name: created_since
+  in: query
+  required: false
+  schema:
+    type: string
+  example: "2026-01-01T12:00:00Z"
+  description: Return only check issues created on or after this ISO 8601 datetime. Returns 400 if the value is not a valid date-time.
 responses:
   '200':
     description: OK