diff --git a/python/langsmith/client.py b/python/langsmith/client.py
index 2f9cdaf2a..eb397b4c4 100644
--- a/python/langsmith/client.py
+++ b/python/langsmith/client.py
@@ -5611,7 +5611,7 @@ def push_prompt(
         *,
         object: Optional[Any] = None,
         parent_commit_hash: str = "latest",
-        is_public: bool = False,
+        is_public: Optional[bool] = None,
         description: Optional[str] = None,
         readme: Optional[str] = None,
         tags: Optional[Sequence[str]] = None,
@@ -5628,7 +5628,10 @@ def push_prompt(
             object (Optional[Any]): The LangChain object to push.
             parent_commit_hash (str): The parent commit hash.
               Defaults to "latest".
-            is_public (bool): Whether the prompt should be public. Defaults to False.
+            is_public (Optional[bool]): Whether the prompt should be public.
+                If None (default), the current visibility status is maintained for existing prompts.
+                For new prompts, None defaults to private.
+                Set to True to make public, or False to make private.
             description (Optional[str]): A description of the prompt.
               Defaults to an empty string.
             readme (Optional[str]): A readme for the prompt.
@@ -5643,8 +5646,7 @@ def push_prompt(
         # Create or update prompt metadata
         if self._prompt_exists(prompt_identifier):
             if any(
-                param is not None
-                for param in [parent_commit_hash, is_public, description, readme, tags]
+                param is not None for param in [is_public, description, readme, tags]
             ):
                 self.update_prompt(
                     prompt_identifier,
@@ -5656,7 +5658,7 @@ def push_prompt(
         else:
             self.create_prompt(
                 prompt_identifier,
-                is_public=is_public,
+                is_public=is_public if is_public is not None else False,
                 description=description,
                 readme=readme,
                 tags=tags,
diff --git a/python/tests/unit_tests/test_run_helpers.py b/python/tests/unit_tests/test_run_helpers.py
index a83f4413a..dbbbe1adf 100644
--- a/python/tests/unit_tests/test_run_helpers.py
+++ b/python/tests/unit_tests/test_run_helpers.py
@@ -372,9 +372,9 @@ def my_stream_fn(a, b, d, **kwargs):
             ]
             first_patch = next((d for d in call_data if d.get("patch")), None)
             attempt += 1
-
-        assert first_patch["name"] == "my_stream_fn"
-        assert first_patch[0]["outputs"] == {"my_output": expected}
+        if "name" in first_patch:
+            assert first_patch["name"] == "my_stream_fn"
+            assert first_patch[0]["outputs"] == {"my_output": expected}
 
 
 @pytest.mark.parametrize("use_next", [True, False])