diff --git a/rest-api-spec/src/main/resources/rest-api-spec/api/open_point_in_time.json b/rest-api-spec/src/main/resources/rest-api-spec/api/open_point_in_time.json
index 6f3d09c15c081..edbdc095b2cb7 100644
--- a/rest-api-spec/src/main/resources/rest-api-spec/api/open_point_in_time.json
+++ b/rest-api-spec/src/main/resources/rest-api-spec/api/open_point_in_time.json
@@ -53,8 +53,7 @@
       },
       "keep_alive": {
         "type": "string",
-        "description": "Specific the time to live for the point in time",
-        "required": true
+        "description": "Specific the time to live for the point in time"
       },
       "allow_partial_search_results": {
         "type": "boolean",