diff --git a/elasticsearch/_async/client/async_search.py b/elasticsearch/_async/client/async_search.py
index 76b395f57..7ea446f82 100644
--- a/elasticsearch/_async/client/async_search.py
+++ b/elasticsearch/_async/client/async_search.py
@@ -216,7 +216,14 @@ async def submit(
         ] = None,
         keep_alive: t.Optional[t.Union["t.Literal[-1]", "t.Literal[0]", str]] = None,
         keep_on_completion: t.Optional[bool] = None,
-        knn: t.Optional[t.Mapping[str, t.Any]] = None,
+        knn: t.Optional[
+            t.Union[
+                t.Mapping[str, t.Any],
+                t.Union[
+                    t.List[t.Mapping[str, t.Any]], t.Tuple[t.Mapping[str, t.Any], ...]
+                ],
+            ]
+        ] = None,
         lenient: t.Optional[bool] = None,
         max_concurrent_shard_requests: t.Optional[int] = None,
         min_compatible_shard_node: t.Optional[str] = None,
diff --git a/elasticsearch/_sync/client/async_search.py b/elasticsearch/_sync/client/async_search.py
index 959cf81dc..2008aeed9 100644
--- a/elasticsearch/_sync/client/async_search.py
+++ b/elasticsearch/_sync/client/async_search.py
@@ -216,7 +216,14 @@ def submit(
         ] = None,
         keep_alive: t.Optional[t.Union["t.Literal[-1]", "t.Literal[0]", str]] = None,
         keep_on_completion: t.Optional[bool] = None,
-        knn: t.Optional[t.Mapping[str, t.Any]] = None,
+        knn: t.Optional[
+            t.Union[
+                t.Mapping[str, t.Any],
+                t.Union[
+                    t.List[t.Mapping[str, t.Any]], t.Tuple[t.Mapping[str, t.Any], ...]
+                ],
+            ]
+        ] = None,
         lenient: t.Optional[bool] = None,
         max_concurrent_shard_requests: t.Optional[int] = None,
         min_compatible_shard_node: t.Optional[str] = None,