diff --git a/libs/langchain/tests/unit_tests/chat_models/test_base.py b/libs/langchain/tests/unit_tests/chat_models/test_base.py
index 46055b092cb..2e6fc4f4521 100644
--- a/libs/langchain/tests/unit_tests/chat_models/test_base.py
+++ b/libs/langchain/tests/unit_tests/chat_models/test_base.py
@@ -133,6 +133,7 @@ def test_configurable() -> None:
             "extra_body": None,
             "include_response_headers": False,
             "stream_usage": False,
+            "use_responses_api": None,
         },
         "kwargs": {
             "tools": [
diff --git a/libs/partners/openai/pyproject.toml b/libs/partners/openai/pyproject.toml
index 3cd5f88b217..1d9e9e55bbb 100644
--- a/libs/partners/openai/pyproject.toml
+++ b/libs/partners/openai/pyproject.toml
@@ -7,7 +7,7 @@ authors = []
 license = { text = "MIT" }
 requires-python = "<4.0,>=3.9"
 dependencies = [
-    "langchain-core<1.0.0,>=0.3.43",
+    "langchain-core<1.0.0,>=0.3.45-rc.1",
     "openai<2.0.0,>=1.66.0",
     "tiktoken<1,>=0.7",
 ]