diff --git a/bson/json_util.py b/bson/json_util.py
index 699f5d8f4a..1c62d0b72f 100644
--- a/bson/json_util.py
+++ b/bson/json_util.py
@@ -497,7 +497,11 @@ def loads(s: Union[str, bytes, bytearray], *args: Any, **kwargs: Any) -> Any:
        Accepts optional parameter `json_options`. See :class:`JSONOptions`.
     """
     json_options = kwargs.pop("json_options", DEFAULT_JSON_OPTIONS)
-    kwargs["object_pairs_hook"] = lambda pairs: object_pairs_hook(pairs, json_options)
+    # Execution time optimization if json_options.document_class is dict
+    if json_options.document_class is dict:
+        kwargs["object_hook"] = lambda obj: object_hook(obj, json_options)
+    else:
+        kwargs["object_pairs_hook"] = lambda pairs: object_pairs_hook(pairs, json_options)
     return json.loads(s, *args, **kwargs)
 
 
diff --git a/doc/contributors.rst b/doc/contributors.rst
index b6e143440b..d7f1030322 100644
--- a/doc/contributors.rst
+++ b/doc/contributors.rst
@@ -99,3 +99,4 @@ The following is a list of people who have contributed to
 - Iris Ho (sleepyStick)
 - Stephan Hof (stephan-hof)
 - Casey Clements (caseyclements)
+- Ivan Lukyanchikov (ilukyanchikov)